| 陶瓷中的三种电响应机构 |
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| 引用本文： | 陈敏,李景德,李向前,符德胜.陶瓷中的三种电响应机构[J].物理学报,1994,43(6):1029-1034. |
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| 作者姓名： | 陈敏 李景德 李向前 符德胜 |
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| 作者单位： | 中山大学物理系 |
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| 基金项目： | 国家自然科学基金资助的课题. |
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| 摘 要： | 用时域和频域介电谱方法可以将晶界层陶瓷中晶粒、内边界层和阻挡层三种不同机构对外加电场的响应讯号分开。从而得出每种机构对样品的总电阻或总电抗的贡献。观察到极化子跳跃导电的弛豫效应，它使样品的阻抗呈现电感性。比较了掺杂氧化锌、钛酸锶和钛酸钡三种典型陶瓷的晶界层的异同。
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| 关 键 词： | 陶瓷 时域分析 频域分析 电阻 |
| 收稿时间： | 1993-06-21 |
THREE KINDS OF ELECTRIC RESPONSE MECHANISM IN CERAMICS |
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| CHEN MIN,LI JING-DE,LI XIANG-QIAN and FU DE-SHENG.THREE KINDS OF ELECTRIC RESPONSE MECHANISM IN CERAMICS[J].Acta Physica Sinica,1994,43(6):1029-1034. |
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| Authors: | CHEN MIN LI JING-DE LI XIANG-QIAN and FU DE-SHENG |
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| Abstract: | Using the method of time domain and frequency domain dielectric spectrum, the response signals of applied field for grains, intergranuhr boundary layer, and barrier layer in a ceramics may be dissociated. So as to give the contribution of each mechanism in total resistance and total reactance of a sample. The effect of conductivity relaxation due to hopping conductance of polaron has been observed. This effect makes the impedance of the sample appear with inductance character. The properties of intergranular boundary in three kinds of typical ceramics of zinc oxide, strontium titanate, and barium titanate are compared. |
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