Dielectric Properties of Ba0.6Sr0.4TiO3-La(B0.5Ti0.5)O3 (B=Mg, Zn) Ceramics

被引：3
|
作者：
Xu, Yebin [1 ]
Liu, Ting [1 ]
He, Yanyan [1 ]
Yuan, Xiao [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Inst Optoelect Sci & Engn, Wuhan 430074, Hubei, Peoples R China
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2009年 / 56卷 / 11期
关键词：
PHASED-ARRAY ANTENNAS; THIN-FILMS; FERROELECTRIC MATERIALS; CRYSTAL-STRUCTURE; MGO COMPOSITES; MICROWAVE; SHIFTERS; LA(ZN1/2TI1/2)O-3; PEROVSKITE; TUNABILITY;
D O I：
10.1109/TUFFC.2009.1322
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Ba0.6Sr0.4TiO3-La(B0.5Ti0.5)O-3 (B = Mg, Zn) ceramics were prepared by a solid-state reaction method, and their microwave dielectric characteristics and tunability were investigated. The ferroelectric-dielectric solid solutions with cubic perovskite structures were obtained for compositions of 10 to 60 mol% La(Mg0.5Ti0.5)O-3 and 10 to 50 mol% La(Zn0.5Ti0.5)O-3. With the increase of linear oxide dielectric content, the dielectric constant and tunability were decreased and Qf was increased. Ba0.6Sr0.4TiO3-La(Mg0.5Ti0.5)O-3 has better dielectric properties than Ba0.6Sr0.4TiO3-La(Zn0.5Ti0.5)O-3. 0.9Ba(0.6)Sr(0.4)TiO(3)-0.1La(Mg0.5Ti0.5)O-3 has a dielectric constant epsilon = 338.2, Qf = 979 GHz and a tunability of was 3.7% at 100 kHz under 1.67 kV/mm. The Qf value of 0.5Ba(0.6)Sr(0.4)TiO(3)-0.5La(Mg0.5Ti0.5)O-3 reached 9367 GHz, but the tunable properties were lost.
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收藏
页码：2343 / 2350
页数：8
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