AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

J Mater Sci Technol ›› 2002, Vol. 18 ›› Issue (05): 479-480.

• Research Articles • Previous Articles

AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

Qing XU, Wen CHEN, Duanping HUANG, Runzhang YUAN

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China...

Received:2001-10-22 Revised:2002-01-21 Online:2002-09-28 Published:2009-10-10
Contact: Qing XU

Abstract

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.

Key words: Strontium titanate, Impedance, Grain, Capacitor

Qing XU, Wen CHEN, Duanping HUANG, Runzhang YUAN. AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics[J]. J Mater Sci Technol, 2002, 18(05): 479-480.

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AC Complex Impedance Analysis of Doped Strontium Titanate Multifunctional Ceramics

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