Dielectric properties of rare earth doped (Sr,Ba)Nb2O6 ceramics

被引：18

作者：

Spínola, DU ^{[1
]}

Santos, IA ^{[1
]}

Bássora, LA ^{[1
]}

Eiras, JA ^{[1
]}

Garcia, D ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Fis, Grp Ceram Ferroelet, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 6-7期

关键词：

sintering; dielectric properties; niobates; tungsten bronze ceramics;

D O I：

10.1016/S0955-2219(98)00384-7

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：

The influence of rare earth addition on the microstructure and phase transition of Sr0.61Ba0.39Nb2O6 ceramics was investigated. Sr0.61Ba0.39Nb2O6 undoped and doped with 0.3 and 1.0 wt% La2O3 and 0.3 wt% Nd2O3 were prepared by the conventional ceramic method. Dielectric measurements were performed in order to characterize the phase transition in these ceramics. The addition of RE elements decreased the maximum dielectric constant (epsilon(MAX)) and its correspondent temperature (T-MAX) and increased the dielectric losses in all studied samples. A peak broadening and an increasingly Curie-Weiss behavior was verified for a La, while an inverse dependence occurred for Nd doping. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：1111 / 1114

页数：4

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