Effect of Nonstoichiometry on the Structure and Microwave Dielectric Properties of Ba1-x(Zn1/2W1/2)O3-x and Ba(Zn1/2-yW1/2)O3-y/2

被引：6
|
作者：
Durilin, D. A. [1 ]
Ovchar, O. V. [1 ]
Belous, A. G. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Vernadsky Inst Gen & Inorgan Chem, UA-03142 Kiev, Ukraine
来源：
INORGANIC MATERIALS | 2011年 / 47卷 / 03期
关键词：
Barium - Dielectric properties - Sintering - Stoichiometry - Tungstate minerals;
D O I：
10.1134/S0020168511030083
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have synthesized Ba1-x(Zn1/2W1/2)O3-x and Ba(Zn1/2-yW1/2)O3-y/2 barium tungstates with different deviations from cation stoichiometry (x = 0.01-0.05, y = 0.01-0.05), determined the phase composition of ceramics fabricated from the tungstates, and investigated their electrical properties. Even slight deviations from cation stoichiometry in Ba(Zn1/2W1/2)O-3 lead to the formation of the scheelite phase BaWO4, and its content increases with heat-treatment temperature. Barium or zinc deficiency in the systems studied improves the sintering behavior of Ba(Zn1/2W1/2)O-3 and increases the degree of 1 : 1 B-site cation ordering, which in turn ensures an increase in microwave quality factor, Q.
引用
收藏
页码：313 / 316
页数：4
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