Dielectric properties of Mg-doped Ba0.6Sr0.4TiO3 ceramics prepared by using sol-gel derived powders

被引：22

作者：

Wang, Jiangying ^{[1
]}

Zhang, Jingji ^{[1
]}

Yao, Xi ^{[2
]}

机构：

[1] China Jiliang Univ, Coll Mat Sci & Engn, Hangzhou 310018, Peoples R China

[2] Tongji Univ, Funct Mat Res Lab, Shanghai 200092, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 505卷 / 02期

关键词：

Sol-gel synthesis; Differential scanning calorimetry; Dielectric properties;

D O I：

10.1016/j.jallcom.2010.06.140

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：

Structural and dielectric properties of yMgO-(1 - y)Ba0.60Sr0.40TiO3 (BST) (where y = 3, 5, 10, 20, 30 and 40 mol%) ceramics prepared by using sal-gel derived powders have been investigated. It is found that a careful control of the synthesis process enables producing a pure perovskite BST phase at a relatively low calcining temperature of 600 degrees C. Two phases, corresponding to BST and MgO phases, are clearly visible when MgO content up to 20 mol%. The influence of MgO additive on dielectric properties of BST ceramics can be classified into two categories: one is the substitution effect of Mg2+ ions and the other is the "composite" effect of MgO. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：783 / 786

页数：4

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