Influences of Excess PbO on Optical Properties and Microstructures of La Modified 0.75Pb (Mg1/3Nb2/3)O3-0.25PbTiO3 Electro-optic Transparent Ceramics

摘要：

　　La-modified 0.75Pb(Mg1/3Nb2/3)O3-0.25PbTiO3(PLMNT) electro-optic (EO) transparent ceramics were synthesized through a columbite precursor method.Excess PbO (10,15 and 20 mol %) was added to study the effect on the transparency,electro-optic effect,and microstructures of PLMNT transparent ceramics.The phase structure of different samples can be identified as single perovskite structure with no second phase detected.The average grain size increased as the concentration of excess PbO increased from 10 mol% to 20 mol%.On the contrary,the transparency decreased with the increase of the concentration of excess PbO.When the concentration of excess PbO was 10 mol%,the transmittance was about 62% at 632.8nm.The EO coefficient was calculated through measuring the birefringence as a function of electric field.The EO coefficient increased with the increase of the concentration of excess PbO and the maximum EO coefficient reached 40.6×10-16(m/V)2 when the excess PbO was 20 mol%.

关键词： PLMNT transparent ceramics Excess PbO Transmittance Electro-optic effect

作者: Wenlong Ji Xiyun He Wenxiu Cheng Pingsun Qiu Xinsen Zheng

作者单位: Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics,Chinese Academy of Sciences, Shanghai 200050, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 555-559

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）