| (Sr,Ca)TiO_3系复合功能陶瓷的涂覆离子热扩散 |
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| 引用本文： | 邹秦,刘阳春,孟中岩.(Sr,Ca)TiO_3系复合功能陶瓷的涂覆离子热扩散[J].材料研究学报,1993,7(6):541-545. |
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| 作者姓名： | 邹秦 刘阳春 孟中岩 |
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| 作者单位： | 西安交通大学电子工程系，西安交通大学，西安交通大学 西安市 710049 |
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| 摘 要： | 采用碱金属离子液相涂覆热扩散方法,研究了涂覆离子、热扩散条件等对(Sr,Ca)TiO_3系陶瓷电性能的影响;用电子探针(EPA)分析了涂覆离子在晶粒边界的浓度分布;根据中间夹层的双 Schottky势垒模型,对测量出的C—V特性进行了计算和拟合,求得各种热扩散条件下的晶界势垒高度。讨论了扩散条件、电性能、晶界势垒之间的内在联系。
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| 关 键 词： | 电容-压敏陶瓷 热扩散 晶界势垒 半导化 |
| 收稿时间： | 1993-12-25 |
| 修稿时间： | 1993-12-25 |
THERMAL DIFFUSION OF COATING IONS IN(Sr,Ca)TiO_3 MULTI-FUNCTION CERAMICS |
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| ZOU Qing,LIU Yangcun,MENG Zhongyan.THERMAL DIFFUSION OF COATING IONS IN(Sr,Ca)TiO_3 MULTI-FUNCTION CERAMICS[J].Chinese Journal of Materials Research,1993,7(6):541-545. |
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| Authors: | ZOU Qing LIU Yangcun MENG Zhongyan |
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| Affiliation: | Xi'an Jiaotong University |
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| Abstract: | The effect of thermal diffusion on electrical properties of(Sr,Ca)TiO_3multi-function ceramics with coating ion was studied.The distributions of coating ion at grainboundary were examined by means of micro-electron probe analysis(EPA).And barrier heightsof the specimens at various thermal diffusion conditions have been obtianed in terms ofSchottky model with scandwich and C-V characterics from the experiments.Furthermore,therelationship among electrical properties,diffusion conditions and grain boundary barrier of thematerials were discussed. |
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| Keywords: | capacitor-varistor ceramics thermal diffusion grain boundary barrier semiconducting |
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