单斜相弛豫铁电单晶0.24PIN–0.43PMN–0.33PT的电光性能  

Electro-optic Properties of Relaxor Ferroelectric 0.24PIN–0.43PMN–0.33PT Monoclinic Single Crystal

作　　者：陈春天[1] 张景云[1] 吴丰民[1] 贺训军[1] 杨彬[2] 孙恩伟[2] 曹文武[2] 

机构地区：[1]哈尔滨理工大学应用科学学院,哈尔滨150080 [2]哈尔滨工业大学凝聚态科学与技术研究所,哈尔滨150080

出　　处：《硅酸盐学报》2015年第11期1592-1596,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(51402075);国家"973"计划项目(2013CB632900)资助

摘　　要：通过将三元体系单斜相结构弛豫铁电单晶铌铟镁酸铅–钛酸铅[Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–Pb Ti O3(PIN–PMN–PT)]的准同型相界组分0.24PIN–0.43PMN–0.33PT单晶沿[011]c方向极化成准单畴态,研究了该单晶的电光性能。采用改进的Mach-Zehnder干涉系统,选用波长为632.8nm激光对单晶的电光系数张量?13、?23和?33进行测量及分析。根据实验及计算结果,排除由压电效应引起晶体在通光方向的伸缩,电光系数张量?13=–21.8 pm/V,?23=64.7 pm/V,?33=85.8 pm/V。测试结果表明,单晶的电光系数具有较高的?23和?33分量,在实际的电光器件应用中,可以在保证单晶透过率的情况下对这两个分量进行利用。The linear electro-optic properties of relaxor ferroelectric crystal 0.24PIN–0.43PMN–0.33 PT in the monoclinic phase poled along the [011]c direction were investigated at room temperature using the 632.8 nm He-Ne laser. The linear electro-optic coefficients（i.e., γ13= –21.8 pm/V, γ23=64.7 pm/V, and γ33=85.8 pm/V） were determined by a modified Mach-Zehnder interferometer method. The effective electro-optic coefficient（i.e., γc=107.6 pm/V） was also calculated. The experimental result shows that the [011]c poled single crystal has the higher electro-optic coefficients（i.e., γ23 and γ33）, which can be used in the actual electro-optical device applications under the condition of excellent light transmittance.

关 键 词：铌铟镁酸铅 钛酸铅 铁电晶体 电光系数 单斜相 准同型相界 

分 类 号：O734.1[理学—晶体学]