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Fe^(3+)-substitution effect on the thermal variation of J-E characteristics and DC resistivity of quadruple perovskite CaCu_(3)Ti_(4)O_(12)

查看全文 作　　者：Kunal [1]B.Modi;Pooja [2]Y.Raval;Dolly [1]J.Parekh;Shrey [3]K.Modi;Niketa [1]P.Joshi;Akshay [1]R.Makadiya;Nimish [4]H.Vasoya;Utpal [5]S.Joshi 高影响力作者 机构地区：[1]Department of Physics,Saurashtra University,Rajkot 360005,India;[2]Department of Physics,C.U.Shah University,Wadhwan City,Surendranagar 363030,India;[3]Department of Environment Engineering,L.D.Engineering College,Ahmedabad 380015,India;[4]Department of Balbhavan,Children´s University,Sector-20,Gandhinagar 382015,India;[5]Department of Physics,University School of Sciences,Gujarat University,Ahmedabad 380009,India高影响力机构 出　　处：《Journal of Semiconductors》索引2022年第43卷第3期,共10页高影响力期刊 摘　　要：The electrical properties of cubic perovskite series,CaCu_(3-x)Ti_(4-x)Fe_(2x)O_(12)with x=0.0,0.1,0.3,0.5,and 0.7,have been studied by employing current density as a function of electric field characteristics registered at different temperatures and thermal variations of direct current electrical resistivity measurements.All of the compositions exhibit strong non-ohmic behavior.The concentration dependence of breakdown field,the temperature at which switching action takes place,and maximum value of current density(J_(max))has been explained on account of structural,microstructural,and positron lifetime parameters.The highest ever reported value of J_(max)=327 mA/cm^(2)has been observed for pristine composition.The values of the nonlinear coefficient advise the suitability of ceramics for low-voltage varistor applications.The Arrhenius plots show typical semiconducting nature.The activation energy values indicate that electric conduction proceeds through electrons with deformation in the system. 关 键 词：perovskites magnetic materials J-E characteristics CAPACITOR
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