One-dimensional regular arrays of antiphase domain boundaries in anti-ferroelectric tin-substituted lead zirconate titanate (PZT) Ceramics

1985 ◽  
Vol 36 (4) ◽  
pp. 221-227 ◽  
Author(s):  
Yu-Jin Chang ◽  
Jing-Yu Lian ◽  
Yong-ling Wang
Author(s):  
M.L.A. Dass ◽  
T.A. Bielicki ◽  
G. Thomas ◽  
T. Yamamoto ◽  
K. Okazaki

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.


Coatings ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 94-94
Author(s):  
Pavel Ctibor ◽  
Zdenek Pala ◽  
Hanna Boldyryeva ◽  
Josef Sedláček ◽  
Viliam Kmetík

2016 ◽  
Vol 675-676 ◽  
pp. 509-512 ◽  
Author(s):  
Pichitchai Butnoi ◽  
Pratthana Intawin ◽  
Ploypailin Yongsiri ◽  
Nuttapon Pisitpipathsin ◽  
Puttapon Pengpad ◽  
...  

The ferroelectric ceramics with composition of (1-x)Pb(Zr0.52Ti0.48O3 [PZT] – x(Ba0.9Ca0.1)(Ti0.85Zr0.15)O3 [BCZT] (x = 0, 0.04, 0.08 and 0.10 ) have been successfully prepared via two-step mixed oxide method. The material systems of lead zirconate titanate (PZT) and barium calcium zirconate titanate (BCZT) have been intensive studied due to their remarkable properties of high ferroelectric and piezoelectric values. In this work, we are interesting to combine PZT with BCZT system in order to improve the electrical property of the ceramic samples. From the obtained results, it can be confirmed that ferroelectric values are significant increased with the optimum amount of the BCZT.


2004 ◽  
Vol 87 (1) ◽  
pp. 53-58 ◽  
Author(s):  
S.F. Wang ◽  
Y.R. Wang ◽  
T. Mahalingam ◽  
J.P. Chu ◽  
K.U. Lin

2007 ◽  
Vol 22 (12) ◽  
pp. 3448-3454 ◽  
Author(s):  
Talal M. Kamel ◽  
G. de With

The electrical behavior of modified soft lead zirconate titanate (PZT) ceramics has been studied as a function of temperature at different direct current (dc) electric fields and grain sizes. As ferroelectrics, such as PZT, are highly polarizable materials, poling, depolarization, and electric conduction contribute to the total electrical current, which leads to anomalous electrical behavior as a function of temperature. The PZT appeared to have a high pyroelectric coefficient, and it was found that the displacement current hides the conduction current near room temperature. The (long-time) steady-state electrical resistivity of the soft PZT used has a typical, relatively high value of 3.6 × 1012 Ω·cm near room temperature. The resistivity above the Curie temperature was two orders of magnitude lower than the room temperature. The resistivity decreases with increasing grain size probably due to the increased Pb vacancy concentration resulting as a consequence of a higher sintering temperature. The values of activation energies suggest that the charge carriers at high temperature are mainly oxygen vacancies. At intermediate temperature, the electrical behavior is controlled by the counteracting effect of depolarization and conduction. Considering the pyroelectric effect and the conduction, it was thus possible to explain the electrical behavior of this soft PZT ceramic over the temperature range considered.


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