| ZnO和Nb2O5共掺杂钛酸锶钡陶瓷的结构及其介电性能研究 |
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| 引用本文： | 王俊岭,周恒为,马晓娇,丁捷,徐凡华,衡晓,雷婷,尹红梅.ZnO和Nb2O5共掺杂钛酸锶钡陶瓷的结构及其介电性能研究[J].伊犁师范学院学报(自然科学版),2014(1):34-37. |
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| 作者姓名： | 王俊岭 周恒为 马晓娇 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： | 采用固相反应法制备了ZnO、Nb 2 O 5共掺杂Ba 0.2 Sr 0.8 TiO 3陶瓷材料，并用X射线衍射（XRD）和介电谱方法，分别对系列陶瓷样品的结构和复介电常数进行了测量.结果表明：1）Zn2＋、Nb5＋进入Ba 0.2 Sr 0.8 TiO 3晶格后仍然为钙钛矿型固溶体；2）Nb 2 O 5会使得材料的低温弥散相变过程转变为弛豫相变过程，并在300～360K区域内会出现新的弛豫过程；3）掺入一定量的ZnO后Nb2O5掺入降低了Ba 0.2 Sr 0.8 TiO 3陶瓷材料的介电常数，增大了其介电损耗.
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| 关 键 词： | ZnO和Nb2O5共掺杂钛酸锶钡 复介电常数 弥散相变 弛豫相变 |
Study on the Structure and Dielectric Properties of ZnO and Nb 2 O 5 Co-doped Barium Strontium Titanate Ceramics |
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| WANG Jun-ling,ZHOU Heng-wei,MA Xiao-jiao,DING Jie,XU Fan-hua,HENG Xiao,LEI Ting,YIN Hong-mei.Study on the Structure and Dielectric Properties of ZnO and Nb 2 O 5 Co-doped Barium Strontium Titanate Ceramics[J].Journal of Ili Normal University,2014(1):34-37. |
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| Authors: | WANG Jun-ling ZHOU Heng-wei MA Xiao-jiao DING Jie XU Fan-hua HENG Xiao LEI Ting YIN Hong-mei |
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| Institution: | 1.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: | ZnO and Nb2O5 co-doped Ba0.2Sr0.8TiO3 ceramics were prepared by the method of solid state reaction. Crystalline structures and complex dielectric constant were measured by X-ray diffraction and dielectric spectra, respectively. The results show that：1） Zinc ions （Zn2＋） and Niobium ion （Nb5＋） enter the crystal lattice of Ba0.2Sr0.8TiO3 perovskite, and the ceramics have pure structure; 2） with the increase of Nb2O5 contents, the typical dispersion phase transition turns into the relaxation phase transition at low temperature, and a new relaxation processes has been found in the range of 300K-360K; 3） when doped certain amount of ZnO, the dielectric constant decreases and the dielectric loss increases at room temperature with the increasing of Nb 2 O 5 content. |
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| Keywords: | ZnO and Nb 2O5 co-doped barium strontium titanate complex dielectric constant dispersive phase transition relaxation phase transition |
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