Structures and properties of Ba0.3Sr0.7TiO3:: MgTiO3 ceramic composites

被引：18

作者：

Lin, TN

Chu, JP ^{[1
]}

Wang, SF

机构：

[1] Natl Taiwan Ocean Univ, Inst Mat Engn, Chilung 202, Taiwan

[2] Natl Taipei Univ Technol, Dept Mat & Minerals Resources Engn, Taipei 106, Taiwan

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 22期

关键词：

barium strontium titanate; magnesium titanate; dielectric constant; microwave property;

D O I：

10.1016/j.matlet.2005.03.070

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ceramic composites of barium strontium titanate (Ba0.3Sr0.7TiO3) mixed with magnesium titanate (MgTiO3, in a range of 5 to 40 mol%) were prepared and studied. At the low MgTiO3 content (5%), a solid solution of Ba0.3Sr0.7TiO3 with MgTiO3 is observed at 1250 degrees C and the solubility is extended to 40% MgTiO3 when the sintering temperature increases to 1350 degrees C. When sintered at 1250 degrees C, the dielectric constant and microwave property Qxf values of composites decrease with increasing MgTiO3 content due to the dilution effect of MgTiO3 phase. Sintering at 1350 degrees C results in an enhanced microwave property, attributed to the single phase of Ba0.3Sr0.7TiO3 and large grained structures. With 10% MgTiO3 sintered at 1350 degrees C, the dielectric constant is 365 and the Qxf value is 1467 GHz indicating their potential in microwave applications. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：2786 / 2789

页数：4

共 16 条

[11] Phase transitions and glasslike behavior in Sr1-xBaxTiO3 [J].