Rayleigh type behavior of the Young's modulus of unpoled ferroelectric ceramics and its dependence on temperature

被引：28

作者：

Algueró, M ^{[1
]}

Jiménez, B ^{[1
]}

Pardo, L ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 13期

关键词：

D O I：

10.1063/1.1614414

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dependence on stress of the low frequency Young's modulus and mechanical losses of unpoled ferroelectric ceramics has been studied as a function of temperature. The Young's modulus of unpoled Pb(Zr,Ti)O(3) (PZT) showed a Rayleigh type dependence, analogous to the one already described for the longitudinal piezoelectric coefficient. This has been associated to ferroelectric/ferroelastic domain wall movements across, and their pinning/depinning on, randomly distributed defects. The Rayleigh coefficient was found to increase with temperature. The activation energy of the Rayleigh process was obtained, which must be related to the pinning energy. The Young's modulus of Mn doped 0.65Pb(Mg(1/3)Nb(2/3))O(3)-0.35PbTiO(3) showed no stress dependence. (C) 2003 American Institute of Physics.

引用

页码：2641 / 2643

页数：3

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