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
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。