Dielectric Properties of Ba4Sm2Fe2M8O30 (M=Nb, Ta) with Tetragonal Bronze Structure

被引：11

作者：

Fang, Liang ^{[1
]}

Peng, Xiyang ^{[2
]}

Li, Chunchun ^{[2
]}

Hu, Changzheng ^{[1
,2
]}

Wu, Bolin ^{[1
]}

Zhou, Huanfu ^{[1
]}

机构：

[1] Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China

[2] Guilin Univ Technol, State Key Lab Breeding Base Nonferrous Met & Spec, Guilin 541004, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 09期

关键词：

PEROVSKITE; CACU3TI4O12; CONSTANT; CERAMICS; PERMITTIVITY; SUPERCONDUCTIVITY; OXIDE; LA; SM; LN;

D O I：

10.1111/j.1551-2916.2010.03754.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：

The tetragonal tungsten bronze (TTB)-structured Ba4Sm2Fe2M8O30 (M=Nb, Ta) dielectrics were prepared and investigated. Dielectric and ferroelectric behaviors revealed that the niobate and the tantalate display ferroelectric and paraelectric nature at room temperature (RT), respectively. The dielectric spectrum showed that Ba4Sm2Fe2Ta8O30 ceramic has a high dielectric constant (similar to 97), a comparatively low temperature coefficient of dielectric constant (similar to-105 ppm/degrees C), and a low dielectric loss (similar to 10-3) (at 1 MHz). These results indicated that the present tantalate might be a new temperature-compensating ceramic.

引用

页码：2430 / 2433

页数：4

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