| 铁电陶瓷/铁氧体叠层共烧体的介电特性 |
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| 引用本文： | 高峰,刘向春,王卫民,张慧君,田长生.铁电陶瓷/铁氧体叠层共烧体的介电特性[J].材料工程,2005(12):3-7. |
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| 作者姓名： | 高峰 刘向春 王卫民 张慧君 田长生 |
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| 作者单位： | 西北工业大学,材料学院,西安710072 |
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| 基金项目： | 航空基金
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中国博士后科学基金 |
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| 摘 要： | 采用电介质物理学等效电路分析方法研究了Pb(Ni1/3Nb2/3)O3基铁电陶瓷与NiZnCu铁氧体叠层共烧体的介电频率响应,探讨了共烧体界面对介电性能的影响.结果表明,叠层共烧体的介电常数随频率的增加而减小,介电损耗随着频率的增加先增大后减小,有明显的损耗峰出现;界面扩散层对叠层共烧体电学响应有影响,叠层共烧体等效电路可视为介电材料层、铁氧体材料层和界面扩散层C re-R re等效电路的串联,并且界面扩散层会对叠层共烧体低频部分的介电响应起作用.
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| 关 键 词： | 铁电陶瓷 铁氧体 叠层共烧 介电性能 铁电陶瓷 铁氧体 叠层共烧 介电特性 Ferroelectrics Properties Dielectric Multilayer Materials Cofired 作用 介电响应 低频 串联 料层 等效电路 电学 扩散层 介电损耗 频率响应 介电常数 |
| 文章编号： | 1001-4381(2005)12-0003-05 |
| 收稿时间： | 2004-10-13 |
| 修稿时间： | 2005-07-08 |
Dielectric Properties of Ferroelectrics/Ferrite Cofired Multilayer Materials |
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| GAO Feng,LIU Xiang-chun,WANG Wei-min,ZHANG Hui-jun,TIAN Chang-sheng.Dielectric Properties of Ferroelectrics/Ferrite Cofired Multilayer Materials[J].Journal of Materials Engineering,2005(12):3-7. |
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| Authors: | GAO Feng LIU Xiang-chun WANG Wei-min ZHANG Hui-jun TIAN Chang-sheng |
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| Affiliation: | College of Material Science, Northwestern Polytechnical University, Xiran 710072, China |
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| Abstract: | The dielectric properties of ferroelectrics/ferrite cofired multilayer materials were investigated by equivalent circuit analysis. The results showed that the dielectric constant decreased with increasing frequency. It was observed that the loss peak appeared in the dissipation factor vs frequency curve. The equivalent circuit analysis revealed that the cofired ferroelectrics/ferrite multilayer composite was not simply series connection by the equivalent circuit of ferroelectrics and ferrite. The interface layer had effect on the dielectric properties of the composite. The thickness of the interface layer was similar to the diffusion distance, which had great influence on the dielectric properties at low frequency. |
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| Keywords: | ferroelectrics ferrite cofired materials dielectric property |
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