EFFECT OF CRYSTAL-AXIS ORIENTATION ON DIELECTRIC-PROPERTIES OF CERAMICS PREPARED FROM FIBROUS BARIUM-TITANATE

被引：30

作者：

OHARA, Y

KOUMOTO, K

YANAGIDA, H

机构：

[1] NAGOYA UNIV,SCH ENGN,DEPT APPL CHEM,CHIKUSA KU,NAGOYA,AICHI 46401,JAPAN

[2] UNIV TOKYO,FAC ENGN,DEPT IND CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 09期

关键词：

D O I：

10.1111/j.1151-2916.1994.tb04601.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Barium titanate (BaTiO3) ceramics with high degrees of a- and c-axis orientation were fabricated by combining hydrothermal synthesis of fibrous particles, formation of green compacts with aligned extruded rods in the mold, and normal sintering. The orientation of crystal axes in such ceramics gives rise to high dielectric permittivity. Ceramics with an orientation degree f = 76% showed values of epsilon/epsilon(0) which are 1.5 times (epsilon/epsilon(0) = 2700) as large as those of a randomly oriented (commercial) ceramic (epsilon/epsilon(0) = 1800).

引用

页码：2327 / 2331

页数：5

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