中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effect of La3+ on microwave dielectric properties of (Pb0.45Ca0.55) (Fe0.5Nb0.5)O-3 ceramics

文献类型:期刊论文

作者Yang QH(杨秋红) ; Kim ES ; Xu J
刊名j. rare earths
出版日期2005
卷号23页码:145
关键词(Pb0.45Ca0.55)(Fe0.5Nb0.5)O-3 microwave dielectric properties oxygen vacancy A-site substitution rare earths
ISSN号1002-0721
中文摘要in this work, microwave dielectric properties of a-site substitution by la3+ in (pb0.45ca0.55) (fe0.5nb0.5) 03 system were investigated. microwave dielectric properties of a-site charge unbalance substitution of [(pb0.45ca0.55)(1-x) la-x] (fe0.5nb0.5)o-3(+) (p45clfn) were improved because the solid solution of small amount of surplus la3+ with (pb, ca)(2+) could eliminate oxygen vacancies, and the formation of secondary phase (pyrochlore) was also caused by surplus la3+. the decreasing of dielectric constant with the increase of la3+ content is due to the formation of pyrochlore. the grain size is changed slightly and q(f) values (7000 similar to 7300 ghz) are almost unchanged at x = 0.02 similar to 0.10, but the temperature coefficient of resonant frequency (tcf) are increased and changed from negative to positive. tcf is zero at x 0.075 with q(f) = 7267 ghz and k = 89. tcf of all specimens are within +/- 5 x 10(-6)degrees c-1.
学科主题光学材料;晶体
收录类别EI
语种英语
WOS记录号WOS:000236093300038
公开日期2009-09-24
源URL[http://ir.siom.ac.cn/handle/181231/5825]  
专题上海光学精密机械研究所_激光与光电子功能材料研发中心
推荐引用方式
GB/T 7714
Yang QH,Kim ES,Xu J. Effect of La3+ on microwave dielectric properties of (Pb0.45Ca0.55) (Fe0.5Nb0.5)O-3 ceramics[J]. j. rare earths,2005,23:145, 147.
APA 杨秋红,Kim ES,&Xu J.(2005).Effect of La3+ on microwave dielectric properties of (Pb0.45Ca0.55) (Fe0.5Nb0.5)O-3 ceramics.j. rare earths,23,145.
MLA 杨秋红,et al."Effect of La3+ on microwave dielectric properties of (Pb0.45Ca0.55) (Fe0.5Nb0.5)O-3 ceramics".j. rare earths 23(2005):145.

入库方式: OAI收割

来源:上海光学精密机械研究所

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