AC Conductivity and Impedance Properties of 0.65Pb(Mg1/3Nb2/3)O3-0.35PbTiO3 Ceramics

被引：2
作者：
Behera, Banarji [1 ]
Araujo, E. B. [1 ]
Reis, R. N. [1 ]
Guerra, J. D. S. [2 ]
机构：
[1] Univ Estadual Paulista, UNESP, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
[2] Univ Fed Uberlandia, Inst Fis, Grp Ferroelet & Mat Multifuncionais, BR-38400902 Uberlaandia, MG, Brazil
来源：
ADVANCES IN CONDENSED MATTER PHYSICS | 2009年 / 2009卷
基金：
巴西圣保罗研究基金会;
关键词：
DIELECTRIC-PROPERTIES; RIETVELD REFINEMENT; SINGLE-CRYSTALS; X-RAY; SPECTROSCOPY; POLARIZATION; PB(MG1/3NB2/3)O-3-PBTIO3; RELAXATION; BEHAVIOR;
D O I：
10.1155/2009/361080
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The electrical properties of 0.65Pb(Mg1/3Nb2/3)O-3-0.35(PbTiO3) ceramics over a wide range of frequencies (10(2)-10(6) Hz) and temperatures (30-225 degrees C) were studied using impedance spectroscopy technique. The impedance and electric permittivity were strongly temperature and frequency dependent. The activation energy, calculated from the temperature dependence of AC conductivity of the ceramics was found to be similar to 0.5 eV. The relaxation process in the ceramics was found to be of non-Debye type. The nature of Cole-Cole diagram reveals the contribution of grain (bulk) and grain boundary permittivity in the ceramics. Copyright (C) 2009 Banarji Behera et al.
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页数：6
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