GRAIN-ORIENTATION AND ELECTRICAL-PROPERTIES OF SR2NB2O7 CERAMICS

被引：24

作者：

FUKUHARA, M ^{[1
]}

HUANG, CY ^{[1
]}

BHALLA, AS ^{[1
]}

NEWNHAM, RE ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIVERSITY PK,PA 16802

来源：

JOURNAL OF MATERIALS SCIENCE | 1991年 / 26卷 / 01期

关键词：

D O I：

10.1007/BF00576033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Sr2Nb2O7 ceramics sintered at 1753 K and the hot-pressed compacts annealed at 1073 K possess low density because of the formation of voids by large expansion. The expansion is attributed to cleavage and due to the preferential grain growth along the [0 1 0] direction. An increase in dielectric constant at temperatures over 973 K and a parabolic decrease of resistivity with increasing temperature are observed. The constant variation corresponds well to the decrease in thermal strain and the grain orientation factor along the [0 k 0] direction.

引用

页码：61 / 66

页数：6