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Effects of B2O3-SiO2 doping on electrical properties of Ba0. 65 Sr0. 35 TiO3 ceramics
作者姓名:章天金  江娟  张柏顺  顾豪爽  刘江华
作者单位:SchoolofPhysicsandElectronicTechnology,HubeiUniversity,Wuhan430062,China
摘    要:Ba0. 65 Sr0. 35 TiOa ceramics doped with B2O3-SiO2 glass composition were prepared by using conventional solid-state reaction method. The effects of glass dopant on the dielectric and ferroelectric properties were investigated. The results show that the dielectric constant decreases while the dielectric loss increases after doping. And as the glass content increases the dielectric constant decreases while the dielectric loss changes slightly. From the complex impedance analysis the resistance and the relaxation time of the grain and the grain boundary can be calculated.Comparing the P--E hysteresis loop of undoped Ba0.65 Sr0.35 TiO3 ceramics with that of B2O3-SiO2 doped Ba0.65 Sr0.35 TiO3 ceramics, it can be seen that the remanent polarization decreases when the B2O3-SiO2 content is lower than 8% (molar fraction), and the coercive field increases with the increase of B2O3-SiO2 content.

关 键 词:Ba0.65Sr0.35TiOa陶瓷  二氧化二硼-二氧化硅  绝缘性质  铁电性质

Effects of B2 O3-SiO2 doping on electrical properties of Ba0.65 Sr0.35 TiO3 ceramics
ZHANG Tian-jin,JIANG Juan,ZHANG Bai-shun,GU Hao-shuang,LIU Jiang-hua.Effects of B2O3-SiO2 doping on electrical properties of Ba0. 65 Sr0. 35 TiO3 ceramics[J].Transactions of Nonferrous Metals Society of China,2005,15(2):229-232.
Authors:ZHANG Tian-jin  JIANG Juan  ZHANG Bai-shun  GU Hao-shuang  LIU Jiang-hua
Abstract:Ba0.65 Sr0.35 TiO3 ceramics doped with B2 O3-SiO2 glass composition were prepared by using conventional solid-state reaction method. The effects of glass dopant on the dielectric and ferroelectric properties were investigated. The results show that the dielectric constant decreases while the dielectric loss increases after doping. And as the glass content increases the dielectric constant decreases while the dielectric loss changes slightly. From the complex impedance analysis the resistance and the relaxation time of the grain and the grain boundary can be calculated.Comparing the P-E hysteresis loop of undoped Ba0.65 Sr0.35 TiO3 ceramics with that of B2 O3-SiO2 doped Ba0.65Sr0.35 TiO3 ceramics, it can be seen that the remanent polarization decreases when the B2 O3-SiO2 content is lower than 8 % (molar fraction), and the coercive field increases with the increase of B2O3-SiO2 content.
Keywords:Ba0  65Sr0  35TiO3 ceramics  B2O3-SiO2  dielectric properties  impedance  ferroelectric properties
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