Microstructure of Ba(Mg1/3Ta2/3)O3-BaSnO3 microwave dielectrics

被引：30

作者：

Tien, LC

Chou, CC

Tsai, DS ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei 106, Taiwan

来源：

CERAMICS INTERNATIONAL | 2000年 / 26卷 / 01期

关键词：

barium magnesium tantalate; cation ordering; tin substitution; low-loss dielectrics;

D O I：

10.1016/S0272-8842(99)00019-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：

Ceramics of Ba(Mg1/3Ta2/3)O-3-BaSnO3 (BSMT) are synthesized by a two-stage calcination method. Microstructures are analyzed, using X-ray diffractometry, transmission elect:ron microscopy, Raman spectroscopy, and scanning electron microscopy. The addition of BaSnO3 reduces the cation ordering of Ba(Mg1/3Ta2/3)O-3 and its sinterability. Variations in ordered structure with BaSnO3 content are revealed by the reduction in intensity of the superlattice reflections, the domain size, the c/a ratio, and the shifting and broadening in Raman lines. The relations between microstructure and quality factors of BSMT are discussed. (C) 1999 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：57 / 62

页数：6

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