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Lead zirconate titanate
About: Lead zirconate titanate is a research topic. Over the lifetime, 7141 publications have been published within this topic receiving 150878 citations.
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TL;DR: The ferroelectric effect has been demonstrated for sol-gel derived lead zirconate titanate (PZT) thin films with simple and compatible with Si planar technology, and offers a wide variety of potential uses for counting, memory, and integrated optical circuit applications.
Abstract: The ferroelectric effect has been demonstrated for sol-gel derived lead zirconate titanate (PZT) (53/47) thin films The respective values of coercive field and remanent polarization were 4*10/sup 6/ V/m and 036 C/m/sup 2/ The thin-film fabrication process is simple and compatible with Si planar technology, and offers a wide variety of potential uses for counting, memory, and integrated optical circuit applications >
155 citations
TL;DR: In this paper, the authors 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 PZT ceramics with compositions near the morphotropic phase boundary, as a function of temperature ranging between −165 and 195°C.
Abstract: 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 boundary, as a function of temperature ranging between −165 and 195°C. The material coefficients were obtained by analyzing the fundamental resonance of the impedance or admittance spectra as a function of frequency for several sample resonance geometries. The piezoelectric coefficients d33, −d31, and d15, as well as the dielectric permittivity coefficients e11T and e33T, generally increased with temperature for both soft and hard PZT samples. However, the elastic compliance coefficients s11E, −s12E, s33E, and s55E exhibited abnormal variations seen as broad peaks over parts of the tested temperature range. Additionally, thermal hystereses were observed in all the studied material ...
154 citations
TL;DR: In this article, a sol gel-based coating technology has been developed for making high quality, thick ceramic coatings, which are made by dispersing ceramic powders in a solgel solution.
Abstract: A sol gel based coating technology has been developed for making high quality, thick ceramic coatings. The films are ceramic-ceramic 0–3 composites made by dispersing ceramic powders in a sol gel solution. The resulting system has all the benefits of sol gel, i.e. ease of fabrication, ability to coat complex geometries and relative cost effectiveness, but is not limited in film thickness. Lead zirconate titanate (PZT), yttria- and ceria-stabilized zirconia, titania, silica and alumina films have been fabricated in the 5–200 μm thickness range. The electrical properties of the PZT films are comparable with those of the bulk ceramic, and the zirconia and alumina films exhibit excellent potential as corrosion- and wear-resistant coatings as well as thermal barrier and performance enhancing coatings.
154 citations
TL;DR: In this paper, the effectiveness of these electromechanical impedance-based structural health monitoring methods can be classified into active and passive based on the properties of the material, the component and the s...
Abstract: Electromechanical impedance–based structural health monitoring method had attracted several researchers in the recent past for aerospace, civil, mechanical, timber and biological structures. Smart materials such as piezoelectric (lead zirconate titanate) and macro fibre composite transducers are either surface bonded or embedded inside the host structure to be monitored. These smart materials with an applied input sinusoidal voltage interact with the structure, to sense, measure, process and detect any change in the selected variables (stress, damage) at critical locations. These can be categorized as wire-based ‘advanced non-destructive testing’, wireless-based ‘battery-powered lead zirconate titanate/macro fibre composite’ and energy harvesting–based ‘self-powered lead zirconate titanate/macro fibre composite’ methods. Most importantly, the effectiveness of these electromechanical impedance–methods can be classified into active and passive based on the properties of the material, the component and the s...
154 citations
TL;DR: In this article, the influence of scandium concentration on the power generation figure of merit (FOM) of ScxAl1−xN) films prepared by cosputtering was investigated.
Abstract: The authors have investigated the influence of scandium concentration on the power generation figure of merit (FOM) of scandium aluminum nitride (ScxAl1−xN) films prepared by cosputtering. The power generation FOM strongly depends on the scandium concentration. The FOM of Sc0.41Al0.59N film was 67 GPa, indicating that the FOM is five times larger than that of AlN. The FOM of Sc0.41Al0.59N film is higher than those of lead zirconate titanate and Pb(Mg1/3Nb2/3)O3-PbTiO3 films, which is the highest reported for any piezoelectric thin films. The high FOM of Sc0.41Al0.59N film is due to the high d31 and the low relative permittivity.
153 citations