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| 1 | Microstructure and electric characteristics of AETiO_3(AE=Mg, Ca, Sr)doped CaCu_3Ti_4O_(12) thin films prepared by the sol–gel method显示文摘This paper focuses on the effects of alkline-earth metal titante AETiO_3(AE = Mg,Ca,Sr) doping on the microstructure and electric characteristics of CaCu_3Ti_4O_(12) thin films prepared by the sol-gel method.The results showed that the grain size of CCTO thin films could be increased by MgTiO_3 doping.The movement of the grain boundaries was impeded by the second phases of CaTiO_3 and SrTiO_3 concentrating at grain boundaries in CaTiO_3 and SrTiO_3 doped CCTO thin films.Rapid ascent of dielectric constant could be observed in 0.1Mg TiO_3 doped CCTO thin films,which was almost as three times high as pure CCTO thin film and the descent of the dielectric loss at low frequency could also be observed.In addition,the nonlinear coefficient(α),threshold voltage(V_T) and leakage current(I_L) of AETiO_3 doped CCTO thin films(AE = Mg,Ca,Sr) showed different variation with the increasing content of the MgTiO_3,CaTiO_3 and SrTiO_3. | Dong Xu Kai He Buhua Chen Chuanmeng Xu Shuyu Mu Lei Jiao Xiujuan Sun Yongtao Yang | 2015 | Progress in Natural Science:Materials International2015，25，5： | 0 |
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