Stabilization of the low temperature coefficient of dielectric constant of Ca5Nb2TiO12 by Zr doping

被引：10

作者：

Cava, RJ ^{[1
]}

Krajewski, JJ ^{[1
]}

机构：

[1] Lucent Technol Bell Labs, Murray Hill, NJ 07574 USA

来源：

MATERIALS RESEARCH BULLETIN | 1999年 / 34卷 / 12-13期

关键词：

oxides; ceramics; dielectric properties; phase transitions;

D O I：

10.1016/S0025-5408(99)00209-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of small amounts of Zr substitution for Ti in the low loss, low temperature coefficient dielectric material Ca5Nb2TiO12 are reported. Substitutions at the 1-5% level significantly increase the range of possible firing temperatures at which polycrystalline ceramics with low temperature coefficients can be obtained. This low temperature coefficient state is at the borderline between ordered and disordered states of the Ca, Nb, and Ti ions in the B sites of the perovskite lattice. The kinetics for ordering is apparently enhanced by the Zr substitutions. (C) 2000 Elsevier Science Ltd.

引用

页码：1817 / 1824

页数：8

共 5 条

[1] Ca5Nb2TiO12 and Ca5Ta2TiO12:: Low temperature coefficient low loss dielectric materials [J].