| AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics |
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| 作者姓名： | QingXU WenCHEN |
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| 作者单位： | [1]StateKeyLaboratoryofAdvancedTechnologyforMaterialssynthesisandProcessing,SchoolofMaterialsscienceandEngineering,WuhanUniversityofTechnology,Wuhan430070,China [2]StateKeyLaboratoryofAdvancedTechnologyforM,SchoolofMaterialsscienceandEngineering,WuhanUniversityofTechnology,Wuhan430070,China |
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| 基金项目： | The research is supported by the Natural Science Foundation of Hubei Province (Grant No.2001ABB075)，Foundation of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing. |
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| 摘 要： | Doped SrTiO3 capacitor-varistor multifunctional ceramics were fabricated by a single sintering process.AC complex impedance analysis was performed to investigate electrical features of grains and grain boundaries for both as-reduced ceramic and reoxidized ceramics.The results showed that the as-reduced ceramic exhibited inductive response at high frequencies above 2MHz,which is attributed to the contribution of electron behavior in semiconducting grains.The high frequency inductive response disappeared in impedance plots of reoxidized ceramics.
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| 关 键 词： | 钛酸锶 多功能陶瓷 阻抗分析 |
| 收稿时间： | 2001-10-22 |
AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics |
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| Qing XU,Wen CHEN,Duanping HUANG,Runzhang YUAN.AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics[J].Journal of Materials Science & Technology,2002,18(5):479-480. |
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| Authors: | Qing XU Wen CHEN Duanping HUANG Runzhang YUAN |
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| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China... |
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| Abstract: | Doped SrTiO3 capacitor-varistor multifunctional ceramics were fabricated by a single sintering process. AC complex impedance analysis was performed to investigate electrical features of grains and grain boundaries for both as-reduced ceramic and reoxidized ceramics. The results showed that the as-reduced ceramic exhibited inductive response at high frequencies above 2 MHz, which is attributed to the contribution of electron behavior in semiconducting grains. The high frequency inductive response disappeared in impedance plots of reoxidized ceramics. |
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| Keywords: | Strontium titanate Impedance Grain Capacitor |
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