| BaTiO3系PTCR材料电学性能的复阻抗解析 |
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| 引用本文： | 张中太 齐建全. BaTiO3系PTCR材料电学性能的复阻抗解析[J]. 硅酸盐学报, 1996, 24(1): 100-104 |
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| 作者姓名： | 张中太 齐建全 |
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| 作者单位： | 清华大学材料科学与工程系 |
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| 摘 要： | 采用复阻抗解析法研究了ＢａＴｉＯ３系ＰＴＣＲ材料晶粒、晶界的电学性能。结果表明：使用欧姆接触电极的ＰＴＣＲ材料等效电路的复阻抗为：晶粒电阻呈ＮＴＣ特性，而晶界电阻天Ｔ〈Ｔｃ时呈ＮＴＣ特性，Ｔ〉Ｔｃ时呈明显的ＰＴＣ特性；ＰＴＣ效应是一种晶界效应。
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| 关 键 词： | 钛酸钡 晶粒 晶界 复阻抗 电学性 半导体材料 |
COMPLEX-PLANE IMPEDANCE ANALYSES OF ELECTRICAL PROPERTIES FOR BaTiO_3-BASED PTCR CERAMICS |
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| Zhang Zhongtai, Qi Jianquan, Tang Zilong, Xia Feng. COMPLEX-PLANE IMPEDANCE ANALYSES OF ELECTRICAL PROPERTIES FOR BaTiO_3-BASED PTCR CERAMICS[J]. Journal of The Chinese Ceramic Society, 1996, 24(1): 100-104 |
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| Authors: | Zhang Zhongtai Qi Jianquan Tang Zilong Xia Feng |
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| Abstract: | The electrical properties of grain and grain boundary of BaTiO_3-based PTCR ceramics were studied by the complex-plane impedance analysis. The results show that the complex-plane impedance of the equivalent circuit for PTCR ceramics with ohmic contact electrodes is given by the grair resistance exhibits NTC, and the grain boundary resistance exhibits NTC when TTc; the PTC effect originates only from the grain boundary. |
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| Keywords: | s: barium titanate grain grain boundary complex-plane impedance |
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