| Y2O3掺杂对钛酸锶钡基陶瓷结构及介电性能的影响 |
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| 引用本文： | 肖宇,周恒为,丁捷,徐凡华,衡晓,雷婷,尹红梅.Y2O3掺杂对钛酸锶钡基陶瓷结构及介电性能的影响[J].伊犁师范学院学报(自然科学版),2014(1):30-33. |
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| 作者姓名： | 肖宇 周恒为 丁捷 徐凡华 衡晓 雷婷 尹红梅 |
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| 作者单位： | [1]伊犁师范学院 物理科学与技术学院,新疆凝聚态相变与微结构实验室,新疆 伊宁 835000 [2]南京大学 物理学院,国家固体微结构重点实验室,江苏 南京 210093 |
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| 基金项目： | 新疆自治区科技厅自然基金青年项目（2009211816）;新疆自治区科技厅自然基金项目（200821184）;新疆普通高校重点学科开放课题（2012ZDXK30）. |
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| 摘 要： | 采用固相反应方法制备出（1-x）Ba 0.2Sr0.8Ti0.98Zn0.04O3＋xY2O3（x=0，0.02，0.025，0.03）陶瓷材料，并研究Y2O3掺杂对BST-Zn陶瓷样品结构和介电性能的影响，得到以下结论：（1）一定量的Y2O3掺杂，可使BST-Zn陶瓷的晶胞体积增大，晶粒尺寸减小；（2）频率为10Hz时，当掺入2%Y 2 O 3时，ε＆#39;最大值可达到885，此时介电损耗为0.024；（3）Y 2 O 3掺入使得低温的弥散相变转化向极化玻璃化转变，并在250K和350K附近出现新的弛豫过程.
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| 关 键 词： | 钛酸锶钡 介电常数 介电损耗 玻璃化转变 |
Effect of Y 2 O 3 Doping on the Structure and Dielectric Properties of （Ba 1-x Sr x）TiO 3-based Ceramics |
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| XIAO Yu,ZHOU Heng-wei,DING Jie,XU Fan-hua,HENG Xiao,LEI Ting,YIN Hong-mei.Effect of Y 2 O 3 Doping on the Structure and Dielectric Properties of （Ba 1-x Sr x）TiO 3-based Ceramics[J].Journal of Ili Normal University,2014(1):30-33. |
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| Authors: | XIAO Yu ZHOU Heng-wei DING Jie XU Fan-hua HENG Xiao LEI Ting YIN Hong-mei |
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| Institution: | ( l.Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics, College of Physical Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China; 2.Department of Physics and National Lab of Solid State Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China) |
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| Abstract: | In this paper, （1-x）Ba 0.2 Sr 0.8 Ti 0.98 Zn 0.04 O 3＋xY 2 O 3（x=0,0.02,0.025,0.03）ceramic samples which based on 4at% ZnO-doped Ba0.2Sr0.8TiO3 （BST-Zn） ceramics were prepared by the conventional solid-state reaction technique. The effect of Y2O3-doped on microstructures and dielectric properties of the BST-Zn simples were studied systematically. The results show that： （1） With doping suitable amount of Y2O3 maximum contents, the simples’ cell volume increases and grain size decreases;（2） It is found that the dielectric constant is 885 and the dielectric loss is 0.024, when doped 2% Y2O3 in BST-Zn ceramic at 10Hz frequency; （3） with the the Y2O3 doping, BST-Zn’s dispersion phase transition turn into the polarization glass transition phase transition in low temperature area, and two relaxation processes have been found at the area of 250K and 350K. |
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| Keywords: | BST permittivity dielectric loss glass transition |
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