Microstructure and electrical properties of SrTiO3-based ceramics

被引：0
|
作者：
Hitomi, Atsushi [1 ]
Koseki, Kenji [1 ]
Horino, Kenji [1 ]
Yamamatsu, Junko [1 ]
Nomura, Takeshi [1 ]
机构：
[1] TDK Corp, Narita, Japan
来源：
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 1994年 / 41卷 / 10期
关键词：
Amorphous films - Diffusion in solids - Electric properties - Firing (of materials) - Grain boundaries - Microstructure - Opacifiers - Sintering - Strontium compounds - Varistors;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Relationships between microstructure and electrical properties of SrTiO3-based varistor have been studied. Si-rich amorphous layers(several nm thick) are found at the grain boundaries when reduced enough under much lower oxygen partial pressure(Po2) than that of firing step after sintering. Then, the sample shows a large V-I nonlinear coefficient(α). On the other hand, the sample without reducing treatment has grain boundaries of facet structure, and then, shows a small α. Behavior of oxygen diffusion during re-oxidation is changed by the reducing treatment; from volume diffusion controlled to grain-boundary diffusion controlled.
引用
收藏
页码：1169 / 1174
相关论文
共 50 条
  • [31] SrTiO3-Based Microfabricated Oxygen Sensors
    Hara, Toru
    Ishiguro, Takashi
    JAPANESE JOURNAL OF APPLIED PHYSICS, 2009, 48 (09) : 09KA171 - 09KA174
  • [32] Superior energy storage properties in SrTiO3-based dielectric ceramics through all-scale hierarchical architecture
    Zuo, Chengyang
    Xu, Jialing
    Yang, Shilin
    Cao, Zhiqin
    Yu, Hongtao
    Liu, Jingsong
    Wei, Xianhua
    MATERIALS HORIZONS, 2024, 11 (07) : 1732 - 1740
  • [33] Oxygen-Concentration-Dependent Electrical Resistances of SrTiO3-Based Thin Films
    Hara, Toru
    Ishiguro, Takashi
    Shinozaki, Kazuo
    JAPANESE JOURNAL OF APPLIED PHYSICS, 2010, 49 (04) : 0411041 - 0411045
  • [34] SrTiO3-based thermoelectrics: Progress and challenges
    Shi, Xiao-Lei
    Wu, Hao
    Liu, Qingfeng
    Zhou, Wei
    Lu, Siyu
    Shao, Zongping
    Dargusch, Matthew
    Chen, Zhi-Gang
    NANO ENERGY, 2020, 78 (78)
  • [35] Temperature dependence of electrical properties in SrTiO3 ceramics
    Iga, Atsushi, 1600, (38):
  • [36] Microstructure and electrical properties of BaTiO3-based semiconductive ceramics
    Hitomi, Atsushi
    Sato, Shigeki
    Takahashi, Chihiro
    Nomura, Takeshi
    Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 1996, 43 (08): : 1049 - 1054
  • [37] The microstructure and electrical conductivity of WO3-doped SrTiO3 ceramics
    You, IK
    Byun, JD
    Kim, YH
    SOLID STATE IONICS, 1996, 83 (1-2) : 159 - 165
  • [38] Microstructure and electrical conductivity of WO3-doped SrTiO3 ceramics
    Korea Univ
    Solid State Ionics, 1-2 (159-165):
  • [39] Formation of varistor layer at the surface of SrTiO3-based ceramics by KrF excimer laser irradiation
    Yoon, JW
    Higaki, K
    Miyayama, M
    Kudo, T
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1999, 107 (12) : 1229 - 1231
  • [40] Formation of varistor layer at the surface of SrTiO3-based ceramics by KrF excimer laser irradiation
    Yoon, Jong-Won
    Higaki, Katsuki
    Miyayama, Masaru
    Kudo, Tetsuichi
    Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, 1999, 107 (1252): : 1229 - 1231
12345