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Journal of Shanghai University >

2011 , Vol. 17 >Issue 4: 535 - 540

DOI: https://doi.org/10.3969/j.issn.1007-2861.2011.04.021

Material Science

Impedance Spectroscopy Study of High Temperature BiFeO3-PbTiO3 Based Ceramics

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  • (School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China)

Online published: 2011-08-30

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Abstract

Impedance spectroscopy has been used to investigate the conduction mechanism in the high temperature ceramics 0.63(Bi0.94La0.06)(Ga0.05Fe0.95)O3-0.37PbTiO3(BLGF-PT). The analysis of impedance and modulus spectroscopy has revealed that the region of grains is the most resistive component in the sample. Also, the electrical properties of BLGFPT ceramics are demonstrated, which can be represented using a parallel combination of a resistor and a universal capacitor. Resistivity of grains extracted from complex impedance plots decrease with the increase of temperature, and the calculated activation energy Ea is 0.88 eV.

Key words： conduction mechanism; equivalent circuit; high temperature ceramic; impedance spectroscopy

Cite this article

CHENG Jin-rong,SHI Gui-yang,QI Yu-fa,CHEN Jian-guo,YU Sheng-wen . Impedance Spectroscopy Study of High Temperature BiFeO3-PbTiO3 Based Ceramics[J]. Journal of Shanghai University, 2011 , 17(4) : 535 -540 . DOI: 10.3969/j.issn.1007-2861.2011.04.021

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