Room-temperature Resistivities and PTCR Properties of Er-doped (Ba,Sr,Ca)TiO3

被引：0
|
作者：
Lee, Ji Ae [1 ]
Han, Young Ho [1 ]
机构：
[1] Sungkyunkwan Univ, Dept Mat Engn, Suwon 440746, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2009年 / 55卷 / 02期
关键词：
BaTiO3; Sr; Ca; PTCR properties; Er; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; CERAMICS; CA; SR;
D O I：
10.3938/jkps.55.770
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effects of substitution of Sr and Ca at Ba sites on the positive temperature coefficient of resistance (PTCR) characteristics of Er-doped BaTiO3 have been studied. In (Ba0.996-xSrxEr0.004)(0.997)TiO3 system, the room-temperature resistivity (rho(25)) and temperature coefficient of resistance (TCR,alpha) decreased with increasing Sr content. As the SrO content was increased, the Curie temperature shifted to lower temperatures by 2.6 degrees C/mol%. The room-temperature resistivity also decreased with increasing CaO content in (Ba0.996-yCayEr0.004)(0.997)TiO3. However, the shift in the Curie point was negligibly small with increasing CaO content. The system co-doped with 10 mol% SrO and 10 mol% CaO, (Ba0.796Sr0.10Ca0.10Er0.004)(0.997)TiO3, showed the lowest room-temperature resistivity (3.5 Omega.cm).
引用
收藏
页码：770 / 775
页数：6
相关论文
共 50 条
  • [31] Effect of Isovalent Ba-Site Substitutions on the Properties of (Ba1 – x – yMyYx)TiO3(M = Ca, Sr, Pb) PTCR Ceramics
    A. G. Belous
    O. I. V'yunov
    L. L. Kovalenko
    V. Buscaglia
    M. Viviani
    P. Nanni
    Inorganic Materials, 2003, 39 : 133 - 138
  • [32] Dielectric Properties of (Ba, Sr, Ca)TiO3 Ceramics for Tunable Microwave Devices
    Qin, Bing
    Jin, Dengren
    Cheng, Jinrong
    Meng, Zhongyan
    2006 15th IEEE International Symposium on Applications of Ferroelectrics, 2007, : 371 - 374
  • [33] Electrical properties of er-doped BaTiO3 ceramics for PTCR applications
    Viviani, M
    Buscaglia, MT
    Buscaglia, V
    Mitoseriu, L
    Testino, A
    Nanni, P
    ISAF 2002: PROCEEDINGS OF THE 13TH IEEE INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS, 2002, : 103 - 106
  • [34] The Tunable Properties of Mn doped (Ba,Sr)TiO3 Thin Film Varactor at Low Temperature.
    Xia, Fengjin
    Wang, Xu
    Wang, Jia
    Wu, Yun
    Bian, Yongbo
    Li, Chunguang
    Zhang, Xueqiang
    Li, Guoqiang
    Bai, Dandan
    Li, Hong
    Sun, Liang
    Sun, Mu
    He, Yusheng
    2015 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS (IMWS-AMP), 2015, : 177 - 179
  • [35] Impedance Properties of Low-Temperature Sintered CuO-doped (Ba, Sr)TiO3 Ceramics
    Shin, Dong-Jin
    Yun, Seok-Woo
    Ahn, Joong-Hyeon
    Koh, Jung-Hyuk
    Science of Advanced Materials, 2016, 8 (09) : 1809 - 1812
  • [36] Influence of donor content on the Curie temperature and room-temperature conductivity of atmospherically reduced and re-oxidized (Ba, Sr)TiO3 ceramics
    Kurata, N
    Kuwabara, M
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1998, 106 (11) : 1092 - 1098
  • [37] Effect of the Distribution of Manganese Ions on the Properties of Mn-Doped (Ba,Y)TiO3 PTCR Ceramics
    O. I. V'yunov
    L. L. Kovalenko
    A. G. Belous
    V. N. Belyakov
    Inorganic Materials, 2003, 39 : 190 - 197
  • [38] (Ba,Sr)TiO3系线性PTCR陶瓷的电性能研究
    周方桥
    吴国安
    陈志雄
    华中科技大学学报, 2001, (10) : 112 - 114
  • [39] Effect of partially oxidized Ti powders on the microstructure and PTCR characteristics of (Ba,Sr)TiO3
    K. Park
    J.-G. Kim
    W.-S. Cho
    Journal of Materials Science: Materials in Electronics, 2002, 13 : 13 - 19
  • [40] Room-temperature ferromagnetism in the Co-doped Ba0.5Sr0.5TiO3 thin films
    Luo, L. B.
    Zhao, Y. G.
    Tian, H. F.
    Yang, J. J.
    Zhang, H. Y.
    Li, J. Q.
    Ding, J. J.
    He, B.
    Wei, S. Q.
    Gao, C.
    APPLIED PHYSICS LETTERS, 2008, 92 (23)
12345