| Sr/Zr掺杂以及抛光对BaTiO_3陶瓷结构和介电性能的影响 |
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| 引用本文： | 李雪翠,路大勇.Sr/Zr掺杂以及抛光对BaTiO_3陶瓷结构和介电性能的影响[J].吉林化工学院学报,2010,27(3):68-71. |
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| 作者姓名： | 李雪翠 路大勇 |
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| 作者单位： | 1. 吉林化工学院材料科学与工程研究中心,吉林,吉林,132022;吉林大学物理学院,吉林,长春,130021
2. 吉林化工学院材料科学与工程研究中心,吉林,吉林,132022 |
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| 基金项目： | 国家教育部新世纪优秀人才支持计划，吉林省教育厅十一五科技资助项目 |
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| 摘 要： | 采用冷压陶瓷技术制备了(Ba0.75Sr0.25)TiO3、Ba(Ti0.8Zr0.2)O3、(Ba0.75Sr0.25)(Ti0.8Zr0.2)O3陶瓷.XRD结果表明,Sr和Zr在BaTiO3的Ba位、Ti位、及Ba/Ti双位并入均具有高固溶性,且为没有超结构特征的单相钙钛矿结构.Sr/Zr的双位并入加快介电峰向低温的移动.Sr掺杂对Ba(Ti0.8Zr0.2)O3介电峰移动率的贡献为-1.5℃/mol%Sr.抛光技术对介电温谱的影响研究表明,尽管水抛光导致(Ba0.75Sr0.25)(Ti0.8Zr0.2)O3陶瓷颜色变暗,但晶体结构不变、介电峰值降低.
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| 关 键 词： | 钛酸钡 锶和锆掺杂 介电陶瓷 固溶 抛光 |
Effect of Sr/Zr doping and polishing on structure and dielectric properties of BaTiO3 ceramics |
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| LI Xue-cui,LU Da-yong.Effect of Sr/Zr doping and polishing on structure and dielectric properties of BaTiO3 ceramics[J].Journal of Jilin Institute of Chemical Technology,2010,27(3):68-71. |
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| Authors: | LI Xue-cui LU Da-yong |
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| Affiliation: | 1.Research Center for Materials ＆ Engineering,Jilin Institute of Chemical Technology,Jilin City 132022,China;2.College of Physics,Jilin University,Changchun 130021,China) |
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| Abstract: | （Ba0.75Sr0.25）TiO3,Ba（Ti0.8Zr0.2）O3,and（Ba0.75Sr0.25）（Ti0.8Zr0.2）O3 ceramics were prepared by cold-pressed ceramic technique.XRD results showed that a high solid solution behavior occurred for the incorporations of Sr and Zr into Ba sites,Ti sites,and Ba/Ti double-sites in barium titanate.Each sample was of single-phase perovskite-type structure without a characteristic of superstructure.Co-doping with Sr and Zr in Ba-and Ti-sites accelerated moving dielectric peak to low temperature.Dielectric peak temperature decreased at a rate of-1.5 ℃/ mol % Sr due to doping of Sr in Ba（Ti0.8Zr0.2）O3.Study on the effect of polishing technique on dielectric-temperature curve indicated that,although its color became dark for（Ba0.75Sr0.25）（Ti0.8Zr0.2）O3 ceramic owing to water polishing,crystal structure did not change and dielectric-peak value decreased. |
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| Keywords: | barium titanate zirconium and strontium doping dielectric ceramics solid solution polishing technique |
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