AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

材料科学技术（英文）, 2002, 18(5): 479-480.

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1.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engi-neering, Wuhan University of Technology, Wuhan 430070, China

2.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engi-neering, Wuhan University of Technology, Wuhan 430070, China

3.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engi-neering, Wuhan University of Technology, Wuhan 430070, China

4.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engi-neering, Wuhan University of Technology, Wuhan 430070, China

基金项目: 湖北省自然科学基金(2001ABB075) Foundation of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing

AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

Keywords： Strontium titanate

Doped SrTiO3 capacitor-varistor multifunctional ceramics were fabricated by a single sintering process. AC compleximpedance analysis was performed to investigate electrical features ofgrains and grain boundaries for both as-reducedceramic and reoxidized ceramics. The results showed that the as-reduced ceramic exhibited inductive response athigh 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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AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

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