... Accession Number : ADA440134. Title : A Ferroelastic Switching Model for Lead Zirconate-Titanate (PZT). Corporate Author ...

... Title : A Novel Method for Characterizing the Electrical Priorities of Lead Zirconate Titanate (PZT) Ferroelectric Films and Memory Devices. ...

... Accession Number : ADA429041. Title : A Piezoelectric MEMS Microphone Based on Lead Zirconate Titanate (PZT) Thin Films. ...

... zirconate titanate - titanium (PZT-Ti) microcantilever for in situ detection of the common food- and water-born pathogen, Salmonella typhimurium. ...

We performed neutron powder diffraction on solution-derived lead zirconate titanates (PZT). Three compositions, PZT 45/55, PZT 20/80 and PbTiO(sub 3), were investigated. The materials were annealed so that the perovskite phase had just begun to grow from ...

measurements In order to be able to distinguish between the ionic and electronic contributions to the totalIonic and electronic conductivity in lead�zirconate�titanate (PZT) Bernard A. Boukamp*, Mai T, PZT) have been analyzed with a CNLS procedure, resulting in the separation of the ionic and electronic

A hydrothermal method is employed for the growth of single crystal vertically aligned lead zirconate titanate (PZT) nanowire arrays. The resulting PZT nanowires were grown from a TiO2 film and are shown to be single crystal with growth in the [110] axis. PZT has a coupling coefficient up to two ...

... Sample Number of PZT Spins Thickness (µm) ... per minute (rpm) for 30 s. After spinning, the samples ... For the spin rate test, the process was varied ...

... Title : Processing Method for Creating Ultra ... titanate (PZT) chemical solution process to create ... OXIDE SEMICONDUCTORS, SOLUTIONS(GENERAL ...

... models quantifying the nonlinear and hysteretic field-displacement relations inherent to lead zirconate titanate (PZT) devices employed in atomic ...

... using piezoelectric lead zirconate titanate (PZT) transducers to characterize the vibrational modes of ceramic Vehicle Body Armor Support System ...

Lead zirconate titanate (PZT) ceramics have been used for underwater transducers. However, single phase PZT ceramic has limited hydrostatic performance due to the low hydrostatic piezoelectric charge and voltage coefficients, dh and gh, respectively. Alth...

Sol-gel processing methods are frequently used for the fabrication of lead zirconate titanate (PZT) thin films for many electronic applications. Our standard approach for film fabrication utilizes lead acetate and acetic acid modified metal alkoxides of z...

Fabrication of nonvolatile memories utilizing ferroelectric polarization charge of lead zirconate-titanate (PZT) thin film Capacitors requires the integration of the PZT capacitor process with the semiconductor device processes. This paper discusses the d...

We designed lead zirconate titanate (PZT) microelectromechanical systems (MEMS) switches for low frequency digital logic applications. The devices were fabricated with a variety of design variables of interest, including actuator length/width, contact len...

We report a method using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) Analysis, Scanning Ion Microscopy (SIM), and polarization-voltage hysteresis data to investigate changes that occur in lead zirconate titanate (PZT) thin films fati...

A composite of PZT (Lead Zirconate Titanate) and a compliant polymer having 1-3-0 connectivity is described. A polymer self-connected in all three mutually perpendicular directions with a void in the center has an array of parallel PZT rod elements embedd...

A lead zirconate titanate(PZT)-Si energy harvester cantilever with PZT bulk ceramics is fabricated by eutectic bonding, polishing and dicing processes. The feasibility of this process is studied using a successful operation of the cantilever in both actuation and harvesting modes. The first prototype made from a ...

A cosmic dust detector for use onboard a satellite is currently being developed by using piezoelectric lead zirconate titanate (PZT). The characteristics of the PZT detector have been studied by bombarding it with hypervelocity iron (Fe) particles supplied by a Van de Graaff accelerator. One central electrode and ...

Values of the electrostrictive constants for the lead zirconate titanate (PZT) solid-solution system were required to complete the development of a thermodynamic phenomenological theory of PZT. The electrostrictive constant was measured as a function of composition on polycrystalline ceramic ...

Lead zirconate titanate (PZT) films have been extensively investigated for many applications: the nonvolatile memory devices based on their remarkable ferroelectric properties, the microelectromechanical system (MEMS) based on their piezoelectricity as well in sensors as in actuators. In this paper, we inject charges into ...

The surface modification of lead zirconate titanate (PZT) ceramics with phosphate ester leaves a phosphorus residue absorbed onto the particle surface. During the sintering processes, this surface layer reacts with the PZT to form lead-rich compounds, such as Pb3(PO4)2 and Pb4(P2O9). The formation of such a ...

... Niobate-Lead Titanate (0.9PMN:0.1PT) and Lead Lanthanum Zirconate Titanate (PZT 9.5/65/35) Under Variation of Temperature and Electric Field ...

The report describes the development of piezoelectric lead zirconate-titanate (PZT) and barium titanate (BT) thin films for application to non-volatile memories for electronic devices such as computers. The work was done in the period from January 1989 to...

A cosmic dust detector using piezoelectric lead zirconate titanate (PZT) is currently being developed for use onboard a spacecraft for the BepiColombo mission. The characteristics of the PZT detector were studied by carrying out hypervelocity impact measurements with iron particles supplied by a Van de Graaff ...

A lead zirconate titanate (PZT) sol was subjected to electrohydrodynamic atomization in the stable cone-jet mode. The droplets generated were sized by laser diffraction before deposition and heating to 600 �C. The droplets were 20 35 ?m in size and transmission electron microscopy showed that their relics consisted of ...

We performed neutron powder diffraction on solution-derived lead zirconate titanates (PZT). Three compositions, PZT 45/55, PZT 20/80 and PbTiO{sub 3}, were investigated. The materials were annealed so that the perovskite phase had just begun to grow from the precursor phase. In our materials ...

We performed neutron powder diffraction on solution-derived lead zirconate titanates (PZT). Three compositions, PZT 45/55, PZT 20/80 and PbTiO3, were investigated. The materials were annealed so that the perovskite phase had just begun to grow from the precursor phase. In our materials this ...

for the growth of barium titanate BaTiO3 on strontium titanate SrTiO3(1 0 0). The patterned structures) Perovskite complex oxides Ferroelectric nanostructures Barium titanate A B S T R A C T We present studies with different target materials: e.g. other oxides such as lead zirconate titanate ...

Dielectric elastomer composites are widely used electromechanical actuators. Compounding of dielectric elastomers with electroceramics helps to decrease the required electric field. In this work, silicone rubber was compounded with Lead- Zirconate-Titanate (PZT) electroceramic powder by the help of a silane coupling agent for better compatibility between ...

UAFM was applied to the observation of the domain structure in lead zirconate titanate (PZT). It imaged the change of elasticity due to grain and domain boundary (DB). For the quantitative evaluation of the contact stiffness, the lateral contact stiffness was taken into account. The stiffness of DB was 10% lower than that within the ...

Process for getting crack-free lead zirconate titanate (PZT) thin films micropatterned on Si substrate is demonstrated. The PZT film was deposited at temperatures below 30 deg C by magnetron sputtering using a ceramic target, and then etched before anneal...

Composite films of lead zirconate titanate (PZT)/poly vinylidene fluoride (PVDF), PZT/Copolymer of vinylidene fluoride - trifluorethylene (VDF-TrFE) and Barium titanate (BaTiO3)/PVDF were prepared in our laboratories and their electrical, dielectric and p...

A sol gel process for the fabrication of piezoelectric thin films has been developed which provide crack free films of lead zirconate titanate (PZT) on a range of substrates. A description of the technical basis for this development is provided. An extens...

In this paper, we develop nonlinear constitutive equations and resulting system models quantifying the nonlinear and hysteretic field- displacement relations inherent to lead zirconate titanate (PZT) devices employed in atomic force microscope stage mecha...

The present invention gives a lead germanate bonded lead zirconate titanate family of composite piezoelectric ceramic materials with a ferroelectric component stabilized against depoling by an insulating grain boundary phase, and a low temperature or liqu...

Factors that control phase evolution, microstructural development and ferroelectric domain assemblage are evaluated for chemically prepared lead zirconate titanate (PZT) thin films. Zirconium to titanium stoichiometry is shown to strongly influence micros...

A method of using piezoelectric lead zirconate titanate (PZT) transducers to characterize the vibrational modes of ceramic Vehicle Body Armor Support System (VBASS) plates for the purpose of crack detection is presented. The amplitudes of the vibrational ...

Purpose of the present work was to investigate the effect of the PbO activity of a packing powder on the densification of Sc-doped PZT during sintering. A high-density Sc-doped sample was achieved.

The authors used micro-Raman spectroscopy to monitor the ferroelectric (FE) to antiferroelectric (AFE) phase transition in PZT ceramic bars during the application of uniaxial stress. They designed and constructed a simple loading device, which can apply s...

Inhomogeneities in chemical compositions and microstructures can result in lot-to-lot variations in the charge release characteristics of ferroelectric lead-zirconate-titanate ceramics. One source of inhomogeneity is agglomeration and selective sedimentat...

A piezocomposite structure was prepared in a 1-1-3 configuration by casting a compressible epoxy between lead zirconate titanate (PZT) rods and a stiff polymer preform matrix. A corrugated polymer perform was used to provide structural stability under hig...

The microstructure and domain structure of polycrystalline lead-zirconate titanate was studied by TEM. An amorphous phase of approx. 100 A thickness is found at the grain boundaries. The domain structure observed is similar to single crystal BaTiO sub 3 ....

The patent application relates to a method for strengthening lead zirconate-lead titanate ceramic transducers which comprises heating the transducer at a temperature from 900C to 1000C in a nonreducing atmosphere containing at least 20 volume percent of o...

... Piekarz, R., 2002: Lead Zirconate Titanate (PZT) Sol- Gel Thin Film ... Washington, D., 2004: Reactive Ion Etching of PECVD Silicon Dioxide (SiO2 ...

The structure and chemical composition of PZT ceramics prepared by conventional ceramic processing has been analyzed by electron microscopy. Lattice parameters obtained from x-ray diffraction indicate that the T and R phases are only very slightly distort...

This paper studied the dynamic loading and subsequent fragmentation of four different load zirconate titanate (95/5 PZT) ferroelectric ceramics using a torsional Kolsky bar apparatus. Solid cylinders of the four materials were loaded in torsion at shear s...

A method of using piezoelectric lead zirconate titanate (PZT) transducers to characterize the vibrational modes of Vehicle Body Armor Support System (VBASS) plates and its preliminary results are presented. The amplitude of the vibrational modes of undama...

Electron paramagnetic resonance (EPR), photo-thermal deflection spectroscopy (PDS), and electrical measurements were used to characterize as-received and UV-lluminated lead lanthanum zirconate titanate (PLZT) and PZT ceramics. Following optical illuminati...

Ferroelectric thin films of BaTiO3 and lead zirconate titanate, PbZro.53Tio.4703 (PZT), have been prepared by pulsed excimer laser deposition. The microstructure and crystallography of these films have been studied by scanning electron microscopy (SEM), e...

Lead titanate zirconate (PZT) preparation from its metal constituent citrates have been investigated. Metal citrates were obtained by forced precipitation using a dehydration alcohol mixture. Salt solutions of lead nitrate and octahydrated zirconyl chlori...

Ferroelastic domain switching during dynamic actuation is measured in situ for a piezoelectric lead zirconate titanate (PZT) ceramic utilizing a new capability developed on The Australian Strain Scanner (TASS) at ANSTO. Diffraction patterns are obtained as a function of time during a 1 Hz cycle. The change in the 0 0 2 and 2 0 0 ...

Radiation detectors composed of lead zirconate titanate (PZT) were studied by directly irradiating them with a 400 MeV/n xenon beam. Fourier analysis revealed that frequency components of the output signal obtained from the detectors explicitly depended on the beam pulse duration. The sensitivity of the multilayered detector was ...

Lead zirconate titanate Pb(Zr(sub x)Ti(sub 1-x))O(sub 3) (PZT) ceramics are ferroelectrics formed as solid solutions between PbTiO(sub 3) and PbZrO(sub 3). Among the different phases in the ferroelectric state, the primary ones are the Ti(sup +) rich tetr...

Electrostrictive composites of thermoplastic elastomer polyurethane (PU) and the ferroelectric lead zirconate titanate (PZT) of various volume fractions have been prepared by hot-roller miller. X-ray diffraction results and SEM micrographs showed that the ceramic crystallized in the ferroelectric phase and was dispersed uniformly in ...

The responses of a piezoelectric lead zirconate titanate (PZT) element to hypervelocity collisions were experimentally studied. In this study, the particles of masses ranging from 0.3 to 10 fg were made to collide with PZT at velocities between 20 and 96 km/s. The amplitude and the corresponding rise time of the ...

Lead zirconate titanate (PZT) ceramics with one dimensional ordered pore structure (1-3 type porous PZT ceramics) were fabricated in this study. The special structure not only enhanced the piezoelectric and dielectric properties effectively but also further decreased the acoustic impedance. All samples exhibited ...

Lead zirconate titanate solid-solution (PZT) films with various thicknesses were synthesized on titanium substrates by repeated hydrothermal treatments. Young�s modulus and the density of the PZT film were measured by the vibrating-reed technique and Archimedes� method, respectively, and they were lower than ...

The characteristics of a radiation detector fabricated with stacks of piezoelectric lead zirconate titanate (PZT) elements were studied by irradiating it with a 400 MeV/n xenon (Xe) beam for various beam pulse durations. This detector is referred to as the multilayered detector (MD). To understand the production mechanism behind the ...

The dielectric response of a compositionally graded lead zirconate titanate (PZT) structure was studied as a function of frequency and amplitude of measuring field. The nonlinear behavior was observed above ``threshold'' value Et of electric field strength giving rise to field-dependent dielectric properties. Just above Et the ...

Characteristics of lead-zirconate-titanate (PZT) elements were studied by directly irradiating them with a 400 MeV/n Xe beam. The elements were sensitive to 104 Xe ions and their output amplitudes were proportional to the beam intensity. An ensemble of those output amplitudes displayed a Bragg-curve-like response towards the range of 400 MeV/n Xe ion. We ...

The surface modification of lead zirconate titanate (PZT) ceramics with phosphate ester leaves a phosphorus residue absorbed onto the particle surface. During the sintering processes, this surface layer reacts with the PZT to form lead-rich compounds, such as Pb{sub 3}(PO{sub 4}){sub 2} and Pb{sub 4}(P{sub 2}O{sub ...

The application of thermal wave measurement techniques was demonstrated for Strontium Barium Niobate (SBN) and Lithium Tantalate (LT) crystals, Lead Zirconate Titanate (PZT) ceramics, and PZT thin films. We have investigated the influence of poling conditions and of chromium and cerium doping on the polarization ...

Lead zirconate titanate PbZr52Ti48O3 (PZT) layers were deposited on ZnO layers by rf-sputtering at varying substrate temperatures. The effect of annealing on PZT crystal properties has been studied by X-ray diffraction and atomic force microscopy. It is shown that the annealing in oxygen ambient has significant ...

Energy harvesters integrable on smart sensor systems have been strongly demanded. Microelectromechanical system (MEMS) acoustic energy harvesters using the first resonance vibration of a lead zirconate titanate (PZT) thin film as a diaphragm have recently been reported. Similar acoustic energy harvesters using the third resonance of a ...

A single phase, nanocrystalline perovskite PZT powder has been successfully derived from a mixture of oxides via a mechanical activation route. Unlike in the conventional solid state reaction, the perovskite PZT phase was first triggered and then progressively formed without passing through the intermediate PT and PZ phases with increasing degree of ...

We report extended x-ray absorption fine structure (EXAFS) measurements for partially heat-treated gels in the lead zirconate titanate system (PZT). Self-consistent results obtained from the titanium and zirconium {ital K}-edges and the lead {ital L}{sub III}-edge were used to determine bonding pathways between cations. For lead ...

This paper provides information as to the variations in volume resistance of PZT with temperature over a temperature range from -41 deg F to 500 deg F. Accompanying the qualitative explanation of methods and results is a graphical display of the resistance-temperature phenomena. Evidence is presented to prove that the measured volume resistance variations are not ...

Measurements of changes in permittivity, tan delta and D33 as function of compressive stress parallel to the polar axis are presented for lead zirconate-lead titanate transducer ceramics. The hard ceramics (PZT-4 and PZT-8) suitable for high power applica...

This paper reports on thin films of 52/48 PZT that have been deposited on Ni-Ti shape memory alloys using a sol-gel spin-on method. Micrometer-thick PZT films adhere well to the alloy for strains as large as 0.4%, and they retain their ferroelectric properties during repeated cycling through the shape memory transformation.

Organic-derived precursors can facilitate the preparation of PZT ceramics, particularly in the areas of processing and batch reproducibility. The use of partially alkoxide-derived precursors and completely organic-derived precursors has been studied. Two ...

, mainly composed of polycrystalline sili- con (polysilicon) and lead zirconate titanate (PZT), used. The results showed that the elastic moduli of polysilicon and PZT films are 110 and 49 GPa, respectively. These values were consistent with the nanoindentation results. For polysilicon films, about 30% reduction

We have measured an 36-A-cm(sup (minus)2) current emission density over the surface area of an 11.4-cm(sup 2)-area Lead-Titanate- Zirconate (PZT) ferroelectric cathode with a pulsed anode-cathode (A-K) potential of 50 kV. We have also observed currents ab...

High-resolution and bright- and dark-field transmission electron microscopy are used to characterize and compare the interface structures and microstructure of PZT/RuO(sub 2)/SiO(sub 2)/Si and PZT/Pt/Ti/SiO(sub 2)/Si ferroelectric thin films, with a view ...

It is well known that exposing lead zirconate titanate (PZT) thin films to hydrogen severely degrades the electrical properties. This phenomenon has been the subject of intensive study; however, there is no electrical evidence relating the hydrogen-induced degradation with the grain boundaries in the films. In this work, using ...

Recent developments in the fabrication technologies of ferroelectric thin films in general and of PZT (lead zirconate titanate) and PLZT (lead lanthanum zirconate titanate) thin films in particular have suggested the feasibility of several new devices. Integrated optical devices for information ...

Composites with 0-3 connectivity were fabricated from lead zirconate titanate (PZT) and phenolic resin powders. This paper reports on these composites that were investigated for dielectric and piezoelectric properties with variations in active particle density and PZT-polymer interface porosity. The dependence of ...

Direct precipitation of fine powders of lead zirconate titanate (PZT) in the complete range of solid solution, is investigated under hydrothermal conditions, starting from lead oxide and titania/zirconia mixed gels. The perovskite phase is formed in the temperature range of 165 - 340/sup 0/C. Sequence of the hydrothermal reactions is ...

The giant magnetoelectric effect of laminated composites of rare-earth-iron alloys (Terfenol-D) and lead-zirconate-titanate (PZT) is calculated by using the finite element method. Our simulations show that the magnetoelectric response of the laminated Terfenol-D/PZT composites is strongly dependent on interfacial bonding between ...

We demonstrated the formation of single-crystal-like materials that contain preferentially oriented arrays of lead zirconate titanate (PZT) cube-shaped particles by self-assembly. Hydrothermally synthesized PZT particles with a bulk composition of Zr/Ti = 70/30 were used in making microcrystal arrays. Spreading a ...

Reliable design of lead zirconate titanate (PZT) piezo stack actuators demands that several issues, including electromechanical coupling and ceramic strength-size scaling, be scrutinized. This study addresses those through the use of ball-on-ring (BoR) biaxial flexure strength tests of a PZT piezoelectric material ...

Reliable design of lead zirconate titanate (PZT) piezo stack actuators demands that a number of issues, including electromechanical coupling and ceramic strength-size scaling, be scrutinized. This study addresses those through the use of ball-on-ring (BoR) biaxial flexure strength tests of a PZT piezoelectric ...

In the last years, the piezoelectric transducers of lead zirconate titanate (PZT) have been widely used in structural health monitoring (SHM) systems based on the electromechanical (E/M) impedance technique. Although many studies indicate the successful use of PZT in damage detection, some practical considerations ...

Poly(vinylidene fluoride) / lead zirconate titanate nanocomposite (PVDF/PZT-NPs) were successfully prepared by mixing fine Pb(Zr0.52, Ti0.48)O3 nanoparticles (PZT-NPs) into a PVDF solution under ultrasonication. The mixture was spin coated onto glass substrate and then annealed at 80� C. X-ray diffraction (XRD), ...

We report a method using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) Analysis, Scanning Ion Microscopy (SIM), and polarization-voltage hysteresis data to investigate changes that occur in lead zirconate titanate (PZT) thin films fatigued using low (below 100 kHz) frequency square waves. Fatigue in ...

Composite of lead zirconate-titanate (PZT) and polymers have been shown to have outstanding properties compared to PZT for hydrostatic sensing applications. Most work in the past has dealt with manipulations of the composite design, ceramic composition, or polymer type. The role of interfacial adhesion between the ...

The synthesis of layered ferrite-lead titanate zirconate (PZT) and lanthanum nanganite-PZT and the observation of giant magneto-electric interactions are discussed. The ferrites used in our studies included pure and Zn substituted cobalt-, nickel- and lithium ferrites. Ferromagnetic manganites used included both ...

This letter investigates the nonlinear response of a bimorph energy harvester comprised of lead zirconate titanate (PZT-5A) laminates. For near resonant excitations, we demonstrate significant intrinsic nonlinear behavior despite geometrically linear motion. Fourth order elastic and electroelastic tensor values for ...

Raman-scattering spectroscopy on the microscale is proposed as a method to study the distribution of defects and existing vacancies in lead zirconate titanate (PZT) fibres during industrial processes to monitor the volumetric structural order within the fibre and to estimate the spatial phase transition degree from rhombohedral to ...

Structural modifications of the lead zirconate titanate [Pb(Zr,Ti)O3] or PZT, subjected to hydrogen, are investigated using online monitoring of the electrical properties of PZT. The changes in PZT properties (dielectric constant and resistance) can be described using well known nucleation and ...

Three sol-gel solutions, namely, acetate-, 2-methoxyethoxide-, and 2-ethylhexanoate-based precursor solutions, were synthesized and utilized for the fabrication of ferroelectric lead zirconate titanate (PZT) thin films on Pt/Ti/SiO{sub 2}/Si substrates. The effect of these sol-gel precursors on the surface morphology, crystallographic ...

A nanoscale active fiber composites (NAFCs) based acoustic emission (AE) sensor with high sensitivity is developed. The lead zirconate titanate (PZT) nanofibers, with the diameter of approximately 80 nm, were electrospun on a silicon substrate. Nanofibers were parallel aligned on the substrate under a controlled electric field. The ...

The effects of one-dimensional pressure parallel to the polar axis of piezoelectric ceramics were investigated for a cobalt-modified barium titanate, NRE-4, two strontium-modified lead zirconate titanates, AM-97 and PZT-4, and a niobium-modified lead zirc...

Etching characteristics of lead-zirconate-titanate (PZT) thin films fabricated by the sol-gel process were investigated using Cl2/Ar and BCl3/Ar inductively coupled plasma, respectively. The maximum etch rate of PZT thin films was obtained: Cl2 (70%)/Ar (30%) and BCl3 (70%)/Ar (30%) gas mixing ratio. The maximum etch rate was 160 ...

The influence of (Mn, F) and (Mg, F) dopants on the piezoelectric properties of lead zirconate titanate (PZT) ceramic compositions close to the morphotropic phase boundary is investigated. PZT ceramics are prepared by a chemical route based on co-precipitation of oxalates and hydroxides. The acceptor is ...

0-3 composite ranging between 0 and 3, of ferroelectric ceramic lead zirconate titanate (PZT) and thermoplastic elastomer polyurethane (PU) were fabricated. The pyroelectric and dielectric properties of the hot-pressed thin film samples of various PZT volume fractions were measured. The experimental dielectric ...

0-3 composite ranging between 0 and 3, of ferroelectric ceramic lead zirconate titanate (PZT) and thermoplastic elastomer polyurethane (PU) were fabricated. The pyroelectric and dielectric properties of the hot-pressed thin film samples of various PZT volume fractions were measured. The experimental dielectric ...

Scanning force microscopy (SFM) has been used for the determination of friction, phase transformation, piezoelectric behavior (in the contact mode), polarization state, and dielectric constant (in the noncontact mode) of nanometer regions of lead zirconate titanate (PZT) films. The use of the SFM tip in the contact mode, to polarize ...

Lead zirconate titanate thin films on silicon wafers and titanium foils were fabricated by the sol-gel technique. Polycrystalline and amorphous PZT thin films were obtained at the heat- treatment temperature of 650 degree(s)C and 400 degree(s)C, respectively. The microstructures of these films ere determined by x-ray and electron ...

Recent advances in fibre Bragg grating (FBG) and piezoceramic lead zirconate titanate (PZT) sensors have enhanced their applicability in structural health monitoring (SHM). FBG belongs to fine class of fibre optical sensors which are extensively used in noise and vibration control and SHM of engineering structures. FBG sensors utilize ...

We have investigated the size effect in lead zirconate titanate (PZT) thin films with a range of manganese (Mn) doping concentrations. We found that the dynamic size effect in the conventional Pt/PZT/Pt thin-film capacitors could be systematically reduced and almost completely eliminated by increasing Mn doping ...

We have investigated the size effect in lead zirconate titanate (PZT) thin films with a range of manganese (Mn) doping concentrations. We found that the dynamic size effect in the conventional Pt/PZT/Pt thin-film capacitors could be systematically reduced and almost completely eliminated by increasing Mn doping ...

Lead titanate, lead zirconate, and lead zirconate titanate (PZT) films in the sub-?m-range were produced at temperatures around 400 �C using novel single-source precursors in a classical thermal CVD process. The design of two bimetallic alkoxide compounds, a lead titanate ...

Using the same conditions and various starting materials, such as lead acetate trihydrate, tetrabulyl titanate, zirconium n-butoxide, and acetylacetone, two kinds of solid precursors, lead zirconate titanate (PZT, Zr/Ti = 15/85) and lead titanate (PT), were fabricated. With three different ...

The detector characteristics of piezoelectric lead zirconate titanate (PZT) were studied by directly irradiating a multilayered PZT detector with 400 MeV/n xenon ions. An extracted beam was processed with a rotating slit. Thus, passed through ~103 xenon ions were available for 50 to 250 ?s. The effect of ...

Online in situ monitoring of the gas-discharge deposition of lead zirconate titanate Pb(Zr x Ti1 ? x )O3 (PZT) films onto a stainless steel substrate revealed oscillatory decay in the intensity of light with a wavelength of 0.640 ?m specular reflected from the growing film. It is established that the parameters of the reflectance ...

Piezoelectrically transduced microelectromechanical system (MEMS) devices are promising candidates for use in distributed wireless sensor networks (WSN) to their low driving voltage and various sensing actuation capabilities. In this paper, we present a micromachined silicon disk resonator with on-disk piezoelectric lead zirconate titanate ...

We have examined experimentally and theoretically the resonance frequency of a lead zirconate titanate (PZT)/brass unimorph disk transducer with a water (ice) layer on the brass surface. We showed that the flexural resonance frequency decreased with the presence of a water layer and the decrease in resonance frequency increased with an ...

This papers on piezoelectric lead zirconate titanate (PZT) ceramic fiber/polymer composite were fabricated by a novel technique referred to as relic processing. Basically, this involved impregnating a woven carbon-fiber template material with PZT precursor by soaking the template in a PZT stock ...

Lead zirconium titanate PbZr{sub 0.53}Ti{sub 0.47}O{sub 3} (PZT) thin films have been obtained by sol-gel synthesis, deposited on different substrates [float glass, indium tin oxide (ITO)-coated float glass, and intrinsic silicon wafer], and later subjected to different thermal treatments. The morphologic and the structural properties of both ...

Lead zirconium titanate PbZr0.53Ti0.47O3 (PZT) thin films have been obtained by sol-gel synthesis, deposited on different substrates [float glass, indium tin oxide (ITO)-coated float glass, and intrinsic silicon wafer], and later subjected to different thermal treatments. The morphologic and the structural properties of both PZT thin ...

Strain mediated magnetoelectric (ME) interactions have been investigated in a sample consisting of oppositely poled lead zirconate titanate (PZT) and asymmetric magnetostrictive layers. A thin layer of Ni with negative magnetostriction and amorphous ferromagnetic Metglas with positive magnetostriction are bonded to the ...

Storage of optical data in thin film PZT (lead zirconate titanate) has been demonstrated at a wavelength of 833 nm. A method for the storage and detection of simple optical-data images in thin PZT films is described. Dots and bars were stored in a 0.5-mum-thick 0/50/50 PZT using 488, 543, 633, ...

The nonlinear piezoelectric and dielectric responses in the shear mode against an applied field were investigated using hard and soft Pb(Zr,Ti)O3 (PZT)-based piezoelectric ceramics. The shear strain was measured using a double-beam leaser Doppler vibrometer. The third-order harmonic components of the strain and the current of soft PZT markedly increased ...

The synthesis by hot pressing and wide-band (10 Hz-1 MHz) magnetoelectric (ME) characterization of bulk composites of nickel zinc ferrite Ni{sub 1-x}Zn{sub x}Fe{sub 2}O{sub 4} (NZFO) (x=0-0.5) and lead zirconate titanate (PZT) are reported. Hot-pressed samples show an order of magnitude improvement in ME voltage coefficient compared to ...

various locations, was analyzed using piezoelectric-ceramic (PZT: lead, zirconate, ... Impedance-based SHM uses piezoelectric (PZT: lead, zirconate, ...

A modified sol-gel method is used for synthesizing Nd ion doped lead zirconate titanate nanopowders Pb1-3x/2NdxZr0.52Ti0.48O3 (PNZT) in an ethylene glycol system with zirconium nitrate as zirconium source. The results show that it is critical to add lead acetate after the reaction of zirconium nitrate with tetrabutyl titanate in the ...

This paper presents the design and fabrication of a novel deformable micro-mirror which is mainly composed of a silicon-based lead zirconate titanate (PbZr53Ti47O3, PZT) film using an inexpensive, simple and reliable sol-gel method. In accordance with the converse piezoelectric effect, deformation of the new micro-mirror, with the ...

Pb(ZrxTi1-x)O3 [x=0.52, PZT(52) near morphotropic phase boundary], tetragonal PZT(65), and rhombohedral PZT(20) thin films have been fabricated on different transparent substrates by radio frequency sputtering. The optical studies show that the band gap energies and refractive indices of the PZT thin films are ...

In this study, we propose a method for evaluating the dielectric property of a single fine particle using the focused ion beam technieque. Lead zirconate titanate (PZT) particles (Sakai Chemical Industry LQ) were sintered at 1473 K for 2 h to fabricate bulk PZT. The bulk PZT was milled to ...

Lead zirconate titanate [Pb(ZrxTi1-x)O3, PZT] thin films with various compositions, whose Zr/Ti ratio were varied as 40/60, 48/52, 47/53, and 60/40, were deposited on Pt(111)/Ti/SiO2/Si substrates by sol-gel method. A seeding layer was introduced between the PZT layer and the bottom electrode to control the texture ...

We have used resonance methods to determine the variation of all the independent piezoelectric, elastic, and dielectric material coefficients, as well as the corresponding electromechanical coupling factors, of soft and hard doped piezoelectric lead zirconate titanate (PZT) ceramics with compositions near the morphotropic phase ...

The structural properties of a hydrothermally deposited lead zirconate titanate (PZT) film have been investigated. The deposited film exhibited a tetragonal perovskite structure with a Zr/Ti ratio of 12/88 in the region between the surface and the depth of 6 ?m. The lattice parameters and Curie temperature of the film were measured to ...

We report here the formation of single phase lead zirconate titanate (PZT) nanopowder with composition Pb(Zr0.52Ti0.48)O3 and average crystallite size 12-20 nm, synthesized by sol-gel process. The phase evolution of PZT gel powder, heat treated at temperatures 550, 650 and 800�C was monitored by X-ray diffraction ...

Layered thick-film composites containing one lead zirconate titanate (PZT) layer, one nickel zinc ferrite (NZF) layer, two PZT-NZF layers, or three PZT-NZF-PZT layers each 40-50 ?m thick are prepared. The layers are applied by screen printing on a ceramic aluminum oxide substrate with a ...

In this paper, we report on the effect of donor addition (Nb5+ or F-) on the electrical and piezoelectric properties and crystallographic characteristics of Mn-doped lead zirconate titanate (PZT) ceramics. Samples were prepared chemically by coprecipitation of oxalates and hydroxides. The niobium ion was incorporated in the B site ...

Ferroelastic domain switching in electrically-poled lead titanate zirconate (PZT) ceramics were investigated during uni-axial compression up to 400MPa, at a series of temperatures from 25�C to 180�C. It is found that both the stress-induced switchable polarization and switchable strain in the electrically-poled ...

The crystallography of the domains and domain walls in PZT are studied using electron diffraction and transmission electron microscopy. Both 90{sup o} and 180{sup o} domains are observed and the 90{sup o} domains are shown to be deformation twins with displacement along <110> on {l_brace}110{r_brace}. The thickness of the 90{sup o} domain wall is determined to be ...

A frequency-agile hexaferrite-piezoelectric composite for potential device applications at subterahertz frequencies is studied. The bilayer is composed of aluminum substituted barium hexagonal ferrite (BaAl{sub 2}Fe{sub 10}O{sub 19}) and lead zirconate titanate (PZT). A dc electric field applied to PZT results in ...

A frequency-agile hexaferrite-piezoelectric composite for potential device applications at subterahertz frequencies is studied. The bilayer is composed of aluminum substituted barium hexagonal ferrite (BaAl2Fe10O19) and lead zirconate titanate (PZT). A dc electric field applied to PZT results in mechanical ...

The application of ferroelectric materials for nonvolatile memory and ferroelectric data storage necessitates quantitative studies of local switching characteristics and their relationship to material microstructure and defects. Switching spectroscopy piezoresponse force microscopy (SS-PFM) is developed as a quantitative tool for real-space imaging of imprint, coercive bias, remanent and ...

Hydrostatic and constant-stress-difference (CSD) experiments were conducted at RT on 3 different sintering runs of unpoled, Nb-doped lead-zirconate-titanate ceramic (PZT 95/5-2Nb) in order to quantify influence of shear stress on displacive, martensitic-l...

The nature of strain mediated magnetoelectric (ME) coupling is investigated in laminates of lead zirconate titanate (PZT) and compositionally stepped ferrite with grading of piezomagnetic coefficient. ME effects that could only be attributed to grading related bending strain are observed in a trilayer of ferrite and oppositely poled ...

PZT, PbZr sub x Tl sub 1-x 03, thin-films with various Zr/Ti ratios, 1 00/0 (lead zirconate) to 0/100 (lead titanate), were prepared by the sol-gel method. Basic electric properties, dielectric constant, tan sigma, P-E hysteresis curve, switching properti...

The feasibility of storing and reading high-density optical information in lead zirconate titanate (PZT) and in lead lanthanum zirconate titanate (PLZT) thin films depends on both the longitudinal electrooptic coefficients and the photosensitivities of the films. This paper describes the ...

Effects of Cr sub 2 O sub 3 additions to Pb(Zr sub 0 . sub 52 ,Ti sub 0 . sub 48 ) O sub 3 (PZT) were investigated by doping with 0.05 and 0.20 wt. percent Cr sub 2 O sub 3 and measuring dielectric, ferroelectric, and piezoelectric properties before and a...

Sol-gel processing has been widely used in the preparation of lead zirconate titanate (PZT) thin films. The authors have applied this methodology to the formation of lead magnesium niobate (PMN) spin-cast deposited thin films. Since there is a limited num...

The reaction sequence and the calcination reaction diagrams for the formation of lead zirconate titanate (PZT) solid solutions were investigated. The formation reactions were studied by differential thermal analyses, wet chemical titrimetric techniques for determining uncombined PbO, and by X-ray diffraction for phase determinations as ...

as a bridge with street lights), drawing a cable to a sensor node is costly. Ideally, an SHM node. Structural Health Monitoring (SHM) is the science and technology of monitoring and assessing the condition. Impedance-based SHM measures impedance of a structure using a PZT (Lead Zirconate Titanate) patch

Piezoelectric bimorphs constructed from lead titanate-zirconate (PZT) ceramic bonded to a brass sheet have been tested at cryogenic temperatures to determine their suitability for use in a low-temperature micropositioner. Experimental data are presented on bimorph sensitivity (displacement per volt) as a function of the number of temperature cycles. ...

This paper reports on the results in investigations into the properties of piezoelectric textured materials that are formed through technological treatment of a mixture of components of dispersed poly(vinyl chloride) and a ferroelectric powder with the application of an external mechanical shear stress and an electric field.

Rietveld refinement of different structural models using neutron diffraction data for a series of powders of lead zirconate titanate, PbZr(1?-?x)Ti(x)O(3) (PZT), is described. It is found that at all the compositions and temperatures studied the best results include contributions from more than one phase in order to fit the data. ...

The microstructure and domain structure of polycrystalline lead-zirconate titanate was studied by TEM. An amorphous phase of approx. 100 A thickness is found at the grain boundaries. The domain structure observed is similar to single crystal BaTiO/sub 3/. The thickness of the 90/sup 0/C domain walls is determined to be less than 100 A. ZrO/sub 2/ particles ...

The pyroelectric coefficient of Lead Zirconate Titanate (Pb(Zr(0.65)Ti(0.35))O3 + 1 wt% Nb2O5) has been measured at temperatures from 10C to 100C. Values obtained from samples poled at ambient temperatures and repeatedly heated range from 0.022 microcoulo...

, "Rare-Earth-Doped GaN: Growth, Properties, and Fabrication of Electroluminescent Devices," IEEE JSTQE. The luminous intensity, efficiency of the emission process, and chromaticity of the emission are the primary dielectrics. Research has led to the utilization of sol-gel based lead zirconate titanate (PZT) ceramic layers

solution to electro-deposit Ni layer on the outer PZT cylinder side.[11] The plating solution composition report, the layered cylinder was sim- plified as a self-bound plate layered composite using the method titanate/nickel bilayered hollow cylindrical magnetoelectric composites Pan De-An( )a) , Zhang Shen-Gen( )a

A modification of the conventional poling procedure for piezoelectric materials was investigated because of inconsistencies in the literature. Preliminary investigations appeared to support the theory of ac-assisted poling. However, a temperature study/limited duty cycle experiment seemed to indicate that the increase in piezoelectric response was probably due to heat produced by the body in ...

Initial examination of a simple Auger depth profile reveals that thin film, pure lead zirconate titanate (PZT) is a layered structure. Oxygen vacancies at the electrode interfaces create an n-type region in a normally p-type material by contributing electrons into the conduction band. Such measurable effects as the polarization versus ...

The electromechanical impedance (EMI) technique using piezoelectric ceramic lead zirconate titanate (PZT) transducers has been increasingly applied to structural health monitoring (SHM) of aerospace, civil and mechanical structures. The PZT transducers are usually surface bonded to or embedded in a structure and ...

Mechanical depolarization of poled lead titanate zirconate (PZT) ceramics was conducted at a series of temperatures from 25 to 180 �C in a temperature-controlled silicon oil tank. Both the longitudinal strain and polarization of the bar-shaped PZT samples were measured during uni-axial compression up to 400 MPa. ...

Reaction mechanisms in the formation of PZT solid solution were studied under hydrothermal conditions (Pb/(Zr + Ti) = 1.0 to 1.9, Zr/Ti = 0/10 to 10/0, 1M to 5M KOH, 100C to 220C, 2 h). A yellow tabular crystallite with tetragonal symmetry and Pb/Ti [approx] 2 was formed at 100 to 130C. A PZT crystallite was formed just above 150C. The crystallite was a ...

In analogy with Piezoelectric Wafer Active Sensors (PWAS), Lead Zirconate Titanate (PZT) thin films also seem to be promising for Structural Health Monitoring (SHM) due to a number of reasons. Firstly, PZT thin films with well oriented domains show enhanced piezoelectric response. Secondly, PWAS requires ...

Surface-mountable wafer-type piezoelectric transducers using lead zirconate titanate (PZT) are widely used to generate and sense guided waves for nondestructive evaluation and structural health monitoring applications. However, little attention has been paid to monitoring PZT transducer integrity, despite possibly ...

The mechanical integrity of piezoelectric ceramics plays a crucial role in the performance and design of lead zirconate titanate (PZT) piezo stack actuators especially as PZT actuators become physically larger and are sought to operate under harsher conditions. The reliable design of such systems demands additional ...

Lead zirconate titanate (PZT) ceramics, which have a wide range of industrial applications, are some of the most highly investigated piezoceramics. The dielectric constant (k) measured at low frequencies was found from previously published experimental results to increase after poling for the tetragonal phase and a decrease for the ...

A PZT (Lead Zirconate-Titanate) transducer requires a couplant to send and receive mechanical waves. This requirement is a major shortcoming of the PZT technique for use in field applications. In the laboratory environment careful considerations and surface treatments are required to use PZT because the couplant ...

... Abstract : Theoretically dense, translucent or transparent, polycrystalline lead lanthanum zirconate titanate (PLZT) bodies are prepared by cold ...

... Descriptors : *Ferroelectric materials, *Patents, Lead compounds, Lanthanum compounds, Titanates, Zirconates, Synthesis(Chemistry ...

Property changes were observed which occur in a nondoped barium titanate body and a lead zirconate titanate Pb(Zr/sub 0.5//sub 6/ Ti/sub 0.4//sub 4/)O/sub 3/ with 1 wt.% Nb/sub 2/O/sub 5/ i after a fluoride powder packing procedure. The fluoride packing procedure consisted of surrounding matured (fired) specimens of BaTiO/sub ...

Piezoceramic materials have attracted much attention for sensing, actuation, structural health monitoring and energy harvesting applications in the past two decades due to their excellent coupling between energy in the mechanical and electrical domains. Among all piezoceramic materials, lead zirconate titanate (PZT) has been the most ...

A new thin-film structure representing the Pt/PZT/SiC/Si system is obtained. The structure comprises a lead zirconate titanate Pb(Zr,Ti)O3 (PZT) film deposited onto thin (90 100 nm) single crystal silicon carbide layers of 3C-SiC and 4H-SiC polytypes grown by a new solid-phase epitaxy on single crystal silicon ...

With the motivation of realizing an all graphene-based circuit for low power, we present a reliable nonvolatile graphene memory device, single-layer graphene (SLG) ferroelectric field-effect transistor (FFET). We demonstrate that exfoliated single-layer graphene can be optically visible on a ferroelectric lead-zirconate-titanate (PZT) substrate and observe ...

Micro-tubes made out of improved lead zirconate titanate (PZT) material are used to develop a new optical switch. These PZT micro-tubes are being manufactured by an electrophoretic deposition process (EPD). EPD overcomes some of the processing problems of other conventional processing techniques. ...

Lead zirconate titanate (PZT) thin film is prepared by sol-gel method on Pt/Ti electrode/SiO{sub 2}/Si wafer. Local poling is performed on the PZT film using an atomic force microscope (AFM). The topography and piezoelectric-induced (PEI) images on the polarized PZT film are recorded using AFM ...

The room temperature dielectric properties of a ferroelectric ceramic having a nominal composition of 95 atomic percent lead zirconate and 5 atomic percent lead titanate (designated as PZT 95/5) with a niobium dopant were examined at high hydrostatic pressures using a tetrahedral anvil apparatus. This ceramic has practical ...

We report in this paper the development of a modified Mach-Zehnder-type double-beam common path laser interferometer for the measurement of electric field-induced strain in piezoelectric materials, especially for the thin films. Compared to previous interferometers, this one is simpler and more compact, and the measurement and reference arms share a common path for most of the optical length. ...

In this work, the results of compositional and microstructural analysis of lead zirconate titanate--lanthanum ruthenate thin film structures prepared by chemical solution deposition are discussed. The cross-section transmission electron microscope (TEM) micrographs of the La-Ru-O film deposited on a SiO2/Si substrate and annealed at 700 degrees C revealed ...

Replacement of noble metal electrodes by base metals significantly lowers the cost of ferroelectric, piezoelectric and dielectric devices. Here, we demonstrate that it is possible to process lead zirconate (Pb(Zr0.52Ti0.48)O3, or PZT) thin films directly on base metal copper foils. We explore the impact of the oxygen partial pressure during processing, and ...

Influence of uniaxial pressure (0-1000 bars) applied parallel to or perpendicularly to the ac or dc electric field (in one-dimensional or two-dimensional manner) on dielectric and ferroelectric properties of hard lead zirconate titanate (PZT) ceramics were investigated. The experimental results revealed that applying uniaxial pressure ...

Electrostriction of a ferroelectric inclusion/nonferroelectric matrix composite system was studied. The samples were prepared by blending the lead zirconate titanate (PZT) particles with the thermoplastic polyurethane through extrusion and subsequently by hot pressing. Quasistatic cyclic electric fields were applied across the samples ...

Lead zirconate titanate (Pb(1.1)(Zr(0.52)Ti(0.48))O(3)) thin films of thickness 260�nm on Pt/Ti/SiO(2)/Si substrates were densified by 2.45�GHz microwave annealing. The PZT thin films were annealed at various annealing temperatures from 400 to 700?�C for 30�min. X-ray diffraction showed that the pyrochlore phase was transformed ...

Lead zirconate titanate (PZT) films 60 {mu}m in thickness have been fabricated using a new sol gel based process. PZT powders are dispersed in a sol gel matrix to form a 0{endash}3 ceramic/ceramic composite. The dielectric properties of these films have been studied as a function of powder concentration, frequency, ...

Influence of uniaxial pressure (0-1000 bars) applied parallel to or perpendicularly to the ac or dc electric field (in one-dimensional or two-dimensional manner) on dielectric and ferroelectric properties of hard lead zirconate titanate (PZT) ceramics were investigated. The experimental results revealed that applying uniaxial pressure ...

This paper presents a real-time straightness measurement and compensation system with an optical straightness measurement system and a single-axis flexure-hinge type lead zirconate titanate (PZT)-based compensation stage. The optical straightness measurement system consists of a He-Ne laser, a quadrant photodiode detector, and five ...

Piezoelectric nanoindentation (PNI) has been developed to quantitatively address electromechanical coupling and pressure-induced dynamic phenomena in ferroelectric materials on the nanoscale. In PNI, an oscillating voltage is applied between the back side of the sample and the indenter tip, and the first harmonic of bias-induced surface displacement at the area of indenter contact is detected. PNI ...

In this thesis, modeling, fabrication and testing of microelectromechanical systems (MEMS) accelerometers based on piezoelectric lead zirconate titanate (PZT) films are investigated. Three different types of structures, cantilever beam, trampoline, and annular diaphragm, are studied. It demonstrates the high-performance, miniaturate, ...

In this study, a fluorine-oxygen substitution in lead zirconate titanate (PZT) ceramics with a nominal composition of Pb0.89(Ba, Sr)0.11(Zr0.52Ti0.48)O3 (PZT) doped with 1% MgO is proposed. The evolution of four dielectric and electromechanical coefficients-?r, tg?, d33, and Qm-with increasing fluorine ...

Lead Zirconate Titanate Oxide (PbZrxTi1-xO3 or PZT) thin films have been widely used in various microsensors and microactuators for their high bandwidth and sensitivity. A typical configuration is to use a Pt/Ti bi-layer as the bottom electrode. Before the PZT film is deposited, Pt/Ti bi-layer must be annealed at ...

Piezoceramic materials have attracted much attention for sensing, actuation, structural health monitoring, and energy harvesting applications in the past two decades due to their excellent coupling between energy in the mechanical and electrical domains. Among all piezoceramic materials, lead zirconate titanate (PZT) has been the most ...

Ferroelectric ceramics with formula (Bi0.487Na0.487La0.017)TiO3/xPb(Zr0.52Ti0.48)O3 (when x = 0, 0.1, 0.5, 1.0 and 3.0 wt%) were prepared by solid-state mixed-oxide method and sintered at 1050 - 1200�C for 2 h. The optimum sintering temperature was 1100�C at which all samples had the density at least 98% of theoretical values. X-ray diffraction results suggested that addition of ...

This report summarizes the results of a project sponsored by Honeywell Corporation (formerly AlliedSignal Inc.) Federal Manufacturing and Technologies/Kansas City (FM and T/KC) and conducted jointly with the University of Missouri, Rolla, titled ''Ultrasonic Imaging for Poling Uniformity Measurements in PZT Ceramic Elements.'' In this ...

Resonance methods were used to determine the variation of several piezoelectric, elastic and dielectric constants, as well as the corresponding electromechanical coupling factors of soft and hard doped Pb(ZrxTi1-x)O3 (PZT) ceramics, with compositions near the morphotropic phase boundary (MPB), as a function of temperature ranging from -165 �C to 195 �C. The material ...

This paper reports on crack-free Pb(Zr,Ti)O[sub 3] (PZT) thin films with preferred orientation that were prepared successfully on MgO (100), SrTiO[sub 3] (100), and Pt/Ti/SiO[sub 2]/Si substrates from metal alkoxide solutions. Calcination of precursor films in a H[sub 2]O[minus] O[sub 2] gas mixture was found to be effective not only for low-temperature crystallization of ...

The authors used micro-Raman spectroscopy to monitor the ferroelectric (FE) to antiferroelectric (AFE) phase transition in PZT ceramic bars during the application of uniaxial stress. They designed and constructed a simple loading device, which can apply sufficient uniaxial force to transform reasonably large ceramic bars while being small enough to fit on the mechanical stage ...

Battery lifetime has been the stumbling block for many power-critical or maintenance-free real-time embedded applications, such as wireless sensors and orthopedic implants. Thus a piezoelectric material that could convert human motion into electrical energy provides a very attractive solution for clinical implants. In this work, we analyze the power generation characteristics of stiff lead ...

Nanocrystalline lead zirconate titanate (PZT) powders have been synthesized using microemulsion processing route. Microemulsion is one of the major processing techniques to synthesize a nanosize, homogenous, and almost agglomerate free ceramic powders. The ternary microemulsion system is consisted of cyclohexane as the oil phase, ...

Previous gas gun experiments using low density foam flyers examined the dynamic response of Dynasen CA-1136 piezoelectric probes having lead zirconate titanate (PZT) elements for impact stresses in the range 0.07 to 0.3 GPa. Recent experiments have extended the dataset down to 0.01 GPa, compared PZT based probes ...

The solid solution of PbZr1?xTixO3, known as lead-zirconate titanate (PZT), was probably one of the most studied ferroelectric materials, especially due to its excellent dielectric, ferroelectric and piezoelectric properties. The highest piezoelectric coefficients of the PZT are found near the morphotropic phase ...

Ln (Er, Eu, Tb, Yb)-doped lead zirconate titanate [Pb1.1(Zr0.6Ti0.4)O3 PZT] thin films on Pt/Ti/SiO2/Si substrates prepared by a sol-gel method. Films have a Zr/Ti ratio of 60/40 and perovskite phase polycrystalline structure. The effect on the structural and electrical properties of films was measured according to additive compound. ...

Yttria-doped zirconia, lead zirconate titanate (PZT) and barium titanate were successfully obtained using hydrothermal procedures. Based on these results mathematical models describing the correlation between the nanopowders' characteristics and the main synthesis parameters are proposed. Powders from the systems ...

... Abstract : Glass-ceramic compositions prepared from lead zirconate-lead titanate and lead strontium titanate have been prepared for application as ...

Thin lead zirconate titanate (PZT) ferroelectric films are currently being used in a variety of applications. One of the more novel uses is in nonvolatile random access memory devices. As part of such a memory device, these PZT films undergo a significant amount of thermal cycling during standard semiconductor ...

Self-assembled monolayers (SAMs) of alkylsiloxanes were formed from hexyltrichlorosilane (HTS) and octadecyltrichlorosilane (OTS) on surfaces of thin films of a complex oxide, lead zirconate titanate (PZT). X-ray photoelectron spectroscopy (XPS) and contact angle measurements confirmed the formation of a thin, uniform organic layer on ...

Lead zirconate titanate (PZT) films were deposited on indium tin oxide coated Corning 7059 glass by rf magnetron sputtering at the temperatures ranging from room temperature to 500 degC. The crack-free PZT films with pure perovskite phase could be successfully fabricated through postannealing at 650 degC for 10 ...

The objective of this research project was to fabricate a functional ferroelectric microcantilever from patterned lead zirconate titanate (PZT) thin films. Cantilevers fabricated from ferroelectric materials have tremendous potential in sensing applications, particularly due to the increased sensitivity that miniaturized devices offer. ...

High energy storage plays an important role in the modern electric industry. Herein, we investigated the role of filler aspect ratio in nanocomposites for energy storage. Nanocomposites were synthesized using lead zirconate titanate (PZT) with two different aspect ratio (nanowires, nanorods) fillers at various volume fractions ...

High energy storage plays an important role in the modern electric industry. Herein, we investigated the role of filler aspect ratio in nanocomposites for energy storage. Nanocomposites were synthesized using lead zirconate titanate (PZT) with two different aspect ratio (nanowires, nanorods) fillers at various volume fractions ...

Transparent PbZr0.52Ti0.48O3 (PZT)-doped silica nanocomposites were fabricated via a modified sol-gel process. The nanocomposites were annealed at different temperatures between 740 and 800 �C in order to produce PZT crystallites with different particle sizes. X-ray diffraction analysis indicated that the embedded PZT nanoparticles ...

The Pb(ZrxTi1-x)O3 (PZT) thin films are potential candidates for ferroelectric random access memory (FeRAM) devices and components for microelectromechanical systems (MEMS). For example, the PZT/GaN system is being explored as RF MEMS devices for insertion in RF communication systems. A reproducible sol-gel process was developed for the deposition of ...

This patent describes a lead zirconate titanate (PZT) piezoelectric ceramic composition which, based on total composition weight, consists essentially of a solid solution of lead zirconate and lead titanate in a PbZrO/sub 3/:PbTiO/sub 3/ ratio from about 0.505:0.495 to about 0.54:0.46; a halide ...