TSSG法生长Zr:Fe:LiNbO_3晶体及其分凝系数  

Segregation Coefficient of Zr:Fe:LiNbO_3 Crystals Grown by TSSG Method

作　　者：阎哲华 代丽[1] 孙晋[2] 姜发同 刘威[2] 代平[3] 李云鹏[2] 

机构地区：[1]哈尔滨理工大学应用科学学院,黑龙江哈尔滨150080 [2]哈尔滨理工大学机械动力工程学院,黑龙江哈尔滨150080 [3]哈尔滨工业大学管理学院,黑龙江哈尔滨150001

出　　处：《哈尔滨理工大学学报》2016年第4期80-82,89,共4页Journal of Harbin University of Science and Technology

基　　金：黑龙江省自然科学基金(QC2015061)

摘　　要：采用顶部耔晶法生长了不同Li/Nb(Li/Nb=0.94,1.05,1.20and1.38)的Zr:Fe:LiNbO_3单晶.测试了Zr:Fe:LiNbO_3晶体的分凝系数.实验结果表明,Li/Nb=1.38的Zr:Fe:LiNbO_3晶体有的Zr离子分凝系数减少并趋于1,随着熔体中Li/Nb比增加,晶体Li/Nb比增加,结合LiNbO_3晶体的占位机制和锂空位缺陷解释了这一实验结果.Zr： Fe ： LiNbO3 crystals with various Li/Nb ratios （ Li/Nb = 0. 94, 1. 05, 1. 20, 1. 38 ） have been grown by Top Seeded Solution Growth method. The segregation coefficient of the Zr4 ＋ and Fe3＋ were measured. It can be derived from measurement made that the segregation coefficient of the Zr4＋o f Zr：Fe：LiNbO3 crystal decreased with increased Li/Nb ratios and its tend to 1. And that with the increase of Li/Nb mole ratios in the melts, the increases Li/Nb mole ratios in the crystals. The experimental results were analyzed based on the Li-va- cancy defect model.

关 键 词：锆铁铌酸锂晶体 顶部耔晶法 分凝系数 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]