Mechanical relaxation in SrBi2Ta2O9 ceramics

被引：20

作者：

Yan, F ^{[1
]}

Wang, YI ^{[1
]}

Liu, JS ^{[1
]}

Zhang, ZG ^{[1
]}

Chen, XB ^{[1
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Ctr Adv Studies Sci & Technol Microstruct, Inst Solid State Phys,Dept Phys, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 19期

关键词：

D O I：

10.1063/1.124016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The internal friction (IF) of SrBi2 Ta2O9 ceramics was measured by using the reed vibration method in the temperature range from 100 to 600 K with frequency in kilohertz. A high IF peak appeared around 500 K, which was interpreted in terms of the migration of oxygen vacancies. Another low IF peak was found with a peak temperature of 200-250 K, which varied for tens of degrees in different samples. This peak was assumed to be due to the depinning process of domain walls from oxygen vacancies. These results are helpful in the understanding of the excellent fatigue resistance property of SBT at room temperature. (C) 1999 American Institute of Physics. [S0003-6951(99)02019-7].

引用

页码：2794 / 2796

页数：3

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