YBaNa(BO_3)_2晶体的助熔剂法生长与表征  

Characterization of YBaNa(BO_3)_2 Crystal Grown by Flux Method

作　　者：张天真[1] 李静[1] 王继扬[1] 张洋[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100

出　　处：《人工晶体学报》2014年第6期1323-1326,共4页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51032004);国家重点基础研究发展计划(973计划)(2010CB833103)

摘　　要：采用助熔剂自发成核法,探索了生长YBaNa(BO3)2晶体的不同助熔剂体系,从中选出2Na2CO3-4H3BO3-BaCO3做助熔剂,生长了YBaNa(BO3)2晶体。采用X射线衍射(XRD),红外吸收光谱和透过光谱,差热失重分析对生长的晶体进行了表征。结果表明,晶体属于六方晶系,空间群为R3,晶胞参数为a=0.53382(2)nm,c=3.58303(19)nm。BO3-3基团存在于晶体结构中,晶体的紫外截止波长在208 nm左右,晶体在800℃时有明显的相变点。YBaNa（ BO3 ）2 crystals were grown by spontaneous nucleation method, using 2Na2CO3-4H3BO3- BaCO3 as the optimal system. The as-grown crystals were characterized by X-ray powder diffraction （XRD）, IR transmittance spectra and TG-DTA analysis, respectively. The results show that BO3^3- existed in the crystal structure, a = 0. 53382 （2） nm, c = 3. 58303 （ 19 ） nm. The sample belongs to hexagonal crystal system with space group R3 and the phase transition occurs at the temperature of 800℃. The ultraviolet absorption edge was determined to be 208 nm.

关 键 词：自发成核 助熔剂 YBaNa(BO3)2晶体 

分 类 号：O782[理学—晶体学]