UNUSUAL DIELECTRIC BEHAVIOR OF LA-TI-AL-O CERAMICS WITH PEROVSKITE STRUCTURE

被引：12

作者：

YOSHIOKA, H

机构：

[1] Hyogo Prefectural Institute of Industrial Research, Yukihira-cho, Suma-ku, Kobe

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1994年 / 33卷 / 7A期

关键词：

DIELECTRIC PROPERTIES; PEROVSKITE STRUCTURE; LANTHANUM TITANIUM ALUMINUM OXIDE; CATION VACANCY; SUPERSTRUCTURE; ORDERING; RELAXATION;

D O I：

10.1143/JJAP.33.L945

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Perovskite compounds, La(2+x)/3(Ti1-zAlx)O3 with x ranging from 0.05 to 0.15, were prepared and the dielectric properties were investigated. Partial substitution of Al3+ for Ti4+ in La2/3TiO3 stabilizes the deficient perovskite structure with ordered A-site cation vacancy. Dielectric loss peaks show the existence of a relaxation process due to ionic motion related to the cation vacancy. High dielectric constants were obtained at lower frequency than the dielectric loss

引用

页码：L945 / L948

页数：4

共 9 条

[1] X-RAY STUDY OF DEFICIENT PEROVSKITE LA2-3TIO3 [J].