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

页码：759 / 761

页数：3

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