New material properties of xLa(Mg1/2Ti1/2)O3-(1-x) (Na0.5Nd0.5)TiO3 ceramics at microwave frequencies

被引：7
作者：
Chen, Yuan-Bin [1 ]
机构：
[1] Chang Jung Christian Univ, Dept Engn & Management Adv Technol, Tainan 71101, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 500卷 / 02期
关键词：
Dielectric; Dielectric resonators; Microwave ceramics; DIELECTRIC CHARACTERISTICS; SYSTEM;
D O I：
10.1016/j.jallcom.2010.03.239
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：
Ceramics in the system xLa(Mg1/2Ti1/2)O-3-(1 - x)(Na0.5Nd0.5)TiO3 with B2O3 additions (1 wt.%) have been investigated by the conventional solid-state route. Doping with B2O3 (1 wt.%) can effectively promote the densification and the dielectric properties of xLa(Mg1/2Ti1/2)O-3-(1 - x) (Na0.5Nd0.5)TiO3 ceramics. 0.4La(Mg1/2Ti1/2)O-3-0.6(Na0.5Nd0.5)TiO3 ceramics with 1 wt.% B2O3 addition possesses a dielectric constant (epsilon(r)) of 42, a Qxf value of 33,000 GHz (at 8 GHz) and a temperature coefficient of resonant frequency (tau(f)) of 0.5 ppm/degrees C sintering at 1475 degrees C. As the content of La(Mg1/2Ti1/2)O-3 increases, the highest Qxf value of 56,000 (GHz) for x=0.8 is achieved at the sintering temperature 1500 degrees C. (C) 2010 Elsevier B.V. All rights reserved.
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收藏
页码：190 / 194
页数：5
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