Ultrasonic attenuation in yttria-stabilized zirconia

被引：1
|
作者：
Kirimoto, K [1 ]
Nobugai, K
Miyasato, T
机构：
[1] Kyushu Inst Technol, Dept Comp Sci & Elect, Iizuka, Fukuoka 8208502, Japan
[2] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan
来源：
PHYSICA B | 1999年 / 263卷
关键词：
ionic conductor; ZrO2(Y); ultrasonic attenuation; dielectric constant; ionic conductivity;
D O I：
10.1016/S0921-4526(98)01282-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The acoustic attenuation at 10 MHz in yttria-stabilized zirconia (ZrO2(Y)) was measured at temperatures between 300 and 600 K. The attenuation curve showed a relaxation peak, from which the activation energy was estimated to be 0.7 +/- 0.07 eV, in good agreement with the value obtained from dielectric constant of 0.66 +/- 0.07 eV. On the other hand, the measurement of ionic conductivity gave 0.92 +/- 0.1 eV. The conclusion is that in addition to diffusion of oxygen ions there exists a second, localised mechanism for relaxation. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：759 / 761
页数：3
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