Effect of Nd3+ on the microwave dielectric properties of (Pb0.5Ca0.5)(Fe0.5Nb0.5)O3 ceramics

被引：3
|
作者：
Yang, QH [1 ]
Kim, ES
Xu, J
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 201800, Peoples R China
[2] Kyonggi Univ, Dept Mat Engn, Suwon 442760, South Korea
[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Beijing 100864, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2004年 / 113卷 / 03期
关键词：
(Pb; Ca; Nd)(Fe; Nb)O-3; microwave dielectric ceramics; perovskite; pyrochlore;
D O I：
10.1016/j.mseb.2004.08.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microwave dielectric properties of A-site substitution by Nd3+ in (Pb0.5Ca0.5)(Fe0.5Nb0.5)O-3 system were investigated. Microwave dielectric properties of [(Pb0.5Ca0.5)(1-x)Nd-x] (Fe0.5Nb0.5)O-3 (PCNFN) system with x = 0.02-0.05 were improved because the solid solution of small amount of excessive Nd3+ with (Pb,Ca)(2+) could eliminate oxygen vacancies. Surplus Nd3+ resulted in the formation of secondary phase (pyrochlore), which deteriorated the microwave dielectric properties of PCNFN ceramics. Dielectric constant was above 100 and quality factor Qf values were 5385-5797 GHz as x = 0.02-0.05. Temperature coefficient of resonant frequency (TCF) was changed from positive to negative with x content. (C) 2004 Elsevier B.V. All rights reserved.
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页码：224 / 227
页数：4
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