Sol-gel synthesis and characterization of Ba(1-x)SrxTiO3 ceramics

被引：31

作者：

Li, Wei ^{[1
]}

Xu, Zhijun ^{[1
]}

Chu, Ruiqing ^{[1
]}

Fu, Peng ^{[1
]}

Hao, Jigong ^{[1
]}

机构：

[1] Liaocheng Univ, Coll Mat Sci & Engn, Liaocheng 252059, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 499卷 / 02期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Barium strontium titanate; Sol-gel process; Microstructure; Dielectric properties; DIELECTRIC-PROPERTIES; TITANATE CERAMICS; BATIO3; SUBSTITUTION; BEHAVIOR; LA;

D O I：

10.1016/j.jallcom.2010.03.180

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ba(1-x)SrxTiO3 (x=0, 0.1, 0.2, 0.3) nanopowders were synthesized from alkoxide solution precursor by sol-gel process. The Ba(1-x)SrxTiO3 powders calcined at 800 degrees C for 2 h were maintained in cubic phase and the cell parameters were in the range of 4.0282-3.9786. The effects of Sr doping and sintering temperature on structure and dielectric characteristics of the Ba(1-x)SrxTiO3 ceramics were investigated. The increase of Sr content in the Ba(1-x)SrxTiO3 ceramics causes the inhibition of grain growth and downward shift of Curie temperature (T-c). The T-c shift rate is 2.5 degrees C/mol% with increasing Sr content. At T-c, the dielectric constants of Ba(1-x)SrxTiO3 ceramics increase with the increasing of sintering temperature, and the highest permittivity (7032) is obtained for x=0.1 sample sintered at 1400 degrees C. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：255 / 258

页数：4

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