STRUCTURAL PHASE-TRANSITION AND ION CONDUCTIVITY IN 0.88ZRO2-0.12SC2O3

被引：40

作者：

ISHII, T ^{[1
]}

IWATA, T ^{[1
]}

TAJIMA, Y ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, DEPT MECH ENGN, MEGURO KU, TOKYO 152, JAPAN

来源：

SOLID STATE IONICS | 1992年 / 57卷 / 1-2期

关键词：

D O I：

10.1016/0167-2738(92)90078-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

It is found that oxygen ion conductor 0.88ZrO2-0.12Sc2O3 shows a discontinuous change in ion conductivity and a structural phase transition at around 650-degrees-C. The temperature dependence of ion conductivity shows a clear hysteresis at transition temperature. The crystal structure changes reversibly from rhombohedral to cubic at the transition temperature. The compound 0.88ZrO2-0.12Sc2O3 exhibits a first-order phase transition to a fast oxygen-ion conductor. The high temperature phase with fast ion conductivity is stabilized in the low temperature region by the addition of a dopant such as Gd2O3.

引用

页码：153 / 157

页数：5

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