| Sr掺杂对TiO2系压敏陶瓷电性能的影响 |
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| 引用本文： | 李莉,屈晓田.Sr掺杂对TiO2系压敏陶瓷电性能的影响[J].电子元件与材料,2004,23(4):22-24. |
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| 作者姓名： | 李莉 屈晓田 |
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| 作者单位： | 山西大学物理系,山西,太原,030006;山西大学物理系,山西,太原,030006 |
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| 基金项目： | 山西省青年科研项目，20001002， |
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| 摘 要： | 以TiO2为原材料,制备了具有压敏–电容复合功能的TiO2系压敏陶瓷材料。通过测试典型样品的V-I特性、D-f特性、电容特性及复阻抗频率谱,研究了不同掺Sr量的TiO2系压敏陶瓷材料的相关电学性质。实验结果表明,掺Sr量在强烈影响材料压敏性能的同时,对材料的电容特性也会产生较大影响。在掺Sr量为x (Sr)=0.6%时,样品表现出最好的压敏性质,其压敏电压为55 V/mm,a可达到5,1 kHz下损耗为0.1,相对介电常数可达2.8?05。
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| 关 键 词： | 压敏陶瓷材料 非线性系数 介电常数 |
| 文章编号： | 1001-2028(2004)04-0022-03 |
TiO2-based Varistor Ceramics:Effect of Sr Additive on the Electrical Properties |
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| LI Li,QU Xiao-tian.TiO2-based Varistor Ceramics:Effect of Sr Additive on the Electrical Properties[J].Electronic Components & Materials,2004,23(4):22-24. |
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| Authors: | LI Li QU Xiao-tian |
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| Abstract: | The electrical properties of TiO2-based varistor ceramics doped with various SrO were investigated by measuring the properties of V-I, D-f characteristic, relative dielectric constant and complex impedance spectra. The results show that SrO both have influence on the properties of varistor and the relative dielectric constant of the TiO2-based varistor ceramics. An optimal composition doped with 0.6 mol% SrO exhibits a breakdown electrical field of 55 V/mm, a ultrahigh relative dielectric constant of 2.8?05 , a nonlinear coefficient of 5 and D (1 kHz) of 0.1. |
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| Keywords: | varistor ceramic materials nonlinear coefficient dielectric constant |
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