Discharge characteristics of pre‐polarized doped lead zirconate titanate under impact at room and high temperature

2021 ◽  
Author(s):  
Ruizhi Wang ◽  
Enling Tang ◽  
Guolai Yang ◽  
Yafei Han ◽  
Chuang Chen ◽  
...  
Keyword(s):  
High Temperature ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Discharge Characteristics ◽  
Zirconate Titanate

Raman analysis of microcircuits with lead zirconate titanate (PZT) films

1992 ◽  
Vol 50 (2) ◽  
pp. 1688-1689
Author(s):  
D. R. Tallant ◽  
R. W. Schwartz ◽  
B. A. Tuttle ◽  
S. C. Everist ◽  
B. C. Tafoya
Keyword(s):  
Raman Spectroscopy ◽  
High Temperature ◽  
Lead Zirconate Titanate ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Lead Zirconate ◽  
Solution Chemistry ◽  
Zirconate Titanate ◽  
Pzt Films ◽  
High Temperature Processing

Certain compositions and structural forms of lead zirconate titanate (PZT) materials have potential applications in microelectronics because of their ferroelectric properties. One such application is in the development of new types of non-volatile memories. PZT films are integrated into microcircuit components using sol-gel deposition techniques. The solution chemistry effects attendant to different sol-gel preparation procedures have been investigated by several researchers.We have used Raman spectroscopy both to characterize the metallo-organic species initially laid down on macroscopic platinum substrates during sol-gel processing and to follow the evolution of Pb-Zr-Ti oxide species through high temperature processing. The high temperature processing removes residual organics and creates Pb-Zr-Ti oxide structures that have ferroelectric properties. Low temperature pyrochlore structures, which are not ferroelectric, can be distinguished by Raman spectroscopy from tetragonal and pseudo-cubic/rhombohedral perovskite structures, which are usefully ferroelectric (Top Figure). In addition Raman spectroscopy has identified lead and titanium oxides that form as intermediates in the high temperature crystallization of ferroelectric PZT structures.

Lead Zirconate Titanate Via Reaction Sintering of Hydroxide Precursors

1999 ◽  
Vol 14 (4) ◽  
pp. 1503-1509 ◽  
Author(s):  
Xue Junmin ◽  
John Wang
Keyword(s):  
High Temperature ◽  
Lead Zirconate Titanate ◽  
Room Temperature ◽  
Sintered Density ◽  
Nitrate Solution ◽  
Lead Zirconate ◽  
Processing Route ◽  
Sintering Behavior ◽  
Zirconate Titanate ◽  
One Step

Lead zirconate titanate (PZT) has been successfully fabricated via a unique one-step sintering processing route, which is simpler than the traditional precursor-calcinationmilling- pelleting-sintering route and is able to deliver an enhanced sintered density at a much reduced sintering temperature. The hydroxide precursor was prepared by coprecipitation from a mixed nitrate solution containing Pb2+, Zr4+, and Ti4+ ions, and it was then compacted into pellets without being calcined at a low temperature. The precursor pellets were dehydrated at 400, 500, and 600 °C for 4 h, respectively, followed by an isostatic pressing at 350 MPa, prior to being sintered at a high temperature. Dehydration temperature has a large impact on the sintering behavior of these hydroxide-derived PZT ceramics. The PZT dehydrated at 400 °C was seriously cracked when sintered at temperatures ranging from 950 to 1150 °C, due to the incomplete dehydration. A sintered density of 99.2% theoretical density was obtained at 1050 °C for 2 h for the powder pellet dehydrated at 500 °C for 4 h. It exhibits a dielectric constant of 1024 and a dielectric loss of 2.1% at a frequency of 1 kHz at room temperature. A calcination at a too-high temperature, e.g., 600 °C, results in a reduction in the sinterability of the precipitate-derived PZT ceramic.

Influence of high-temperature annealing on the orientation of the unipolarity vector in lead zirconate titanate thin films

2016 ◽  
Vol 58 (11) ◽  
pp. 2325-2330 ◽  
Author(s):  
A. G. Kanareikin ◽  
E. Yu. Kaptelov ◽  
S. V. Senkevich ◽  
I. P. Pronin ◽  
A. Yu. Sergienko ◽  
...  
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
High Temperature Annealing ◽  
Zirconate Titanate

Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

1986 ◽  
Vol 44 ◽  
pp. 482-483
Author(s):  
M.L.A. Dass ◽  
T.A. Bielicki ◽  
G. Thomas ◽  
T. Yamamoto ◽  
K. Okazaki
Keyword(s):  
Lead Zirconate Titanate ◽  
Direct Proof ◽  
Lead Zirconate ◽  
Subsolidus Phase ◽  
Pzt Ceramics ◽  
Subsolidus Phase Diagram ◽  
Zirconate Titanate ◽  
Two Phases ◽  
Cbd Method ◽  
Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

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