THE CONTRIBUTION OF ELECTRICAL CONDUCTIVITY,DIELECTRIC PERMITTIVITY AND DOMAIN SWITCHING IN FERROELECTRIC HYSTERESIS LOOPS

查看全文 作　　者：HAIXUE [1,2]YAN;FAWAD [1,2]INAM;GIUSEPPE [1,2]VIOLA;HUANPO [1,2]NING;HONGTAO [1,3]ZHANG;QINGHUI [4]JIANG;TAO [1]ZENG;ZHIPENG [1]GAO;MIKE J [1,2]REECE

机构地区：[1]School of Engineering and Materials Science Queen Mary University of London Mile End Road,London,E14NS,UK;[2]Nanoforce Technology Ltd,Mile End Road London,E14NS,UK;[3]Department of Materials,University of Oxford Oxford,OX13PH,UK;[4]School of Materials Science and Engineering University of Jinan,Shandong 250022,P.R.China

出　　处：《Journal of Advanced Dielectrics》索引2011年第1卷第1期,共12页

基　　金：This work was supported by the UK Royal Society International Joint Project(2009/R2);Xi'an Jiaotong University international incoming short visits(2008 and 2009). 摘　　要：Triangular voltage waveform was employed to distinguish the contributions of dielectric permittivity,electric conductivity and domain switching in current-electricfield curves.At the same time,it is shown how those contributions can affect the shape of the electric displacement-electricfield loops(D-E loops).The effects of frequency,temperature and microstructure(point defects,grain size and texture)on the ferroelectric properties of several ferroelectric compositions is reported,including.BaTiO_(3);lead zirconate titanate(PZT);lead-free Na_(0.5)K_(0.5)NbO_(3);perovskite-like layer structured A_(2)B_(2)O_(7)with super high Curie point(T_(c));Aurivillius phase ferroelectric Bi_(3.15)Nd_(0.85)Ti_(3)O_(12);and multiferroic Bi_(0.89)La_(0.05)Tb_(0.06)FeO_(3).This systematic study provides an instructive outline in the measurement of ferroelectric properties and the analysis and interpretation of experimental data. 关键词：POLARIZATION FERROELECTRICS CONDUCTIVITY PERMITTIVITY domain

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THE CONTRIBUTION OF ELECTRICAL CONDUCTIVITY,DIELECTRIC PERMITTIVITY AND DOMAIN SWITCHING IN FERROELECTRIC HYSTERESIS LOOPS

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