新型红外非线性硒镓钡多晶的合成与提纯研究  

Synthesis and purification of novel infrared nonlinear BaGa_(4)Se_(7) polycrystalline

作　　者：周强 王振友[1] 吴海信[1] 黄昌保[1] 倪友保[1] 余学舟 胡倩倩 刘国晋 魏玲莉 ZHOU Qiang;WANG Zhenyou;WU Haixin;HUANG Changbao;NI Youbao;YU Xuezhou;HU Qianqian;LIU Guojin;WEI Lingli(Anhui Provincial Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,光子器件与材料安徽省重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026

出　　处：《量子电子学报》2024年第5期822-829,共8页Chinese Journal of Quantum Electronics

基　　金：安徽省自然科学基金面上项目(2108085ME151)。

摘　　要：硒镓钡晶体(BaGa_(4)Se_(7),BGSe)是目前广受关注的一种新型红外非线性晶体。本文分别采用双温区法和高压辅助法合成硒镓钡多晶原料,并设计大温度梯度快速提纯方法对合成后的多晶料进行提纯。通过粉末X射线衍射仪(XRD)、电感耦合等离子体质谱仪(ICP-MS)和X射线能谱仪(EDS)对提纯前后的BGSe多晶的物相组成和杂质浓度进行了表征。X射线衍射谱与理论模拟图谱结果一致,无杂峰;ICP-MS等测试结果表明,提纯后晶锭中的Fe、Al等金属杂质以及O杂质含量均得到明显降低。本工作可为高品质单晶生长提供原料基础。BaGa_(4)Se_(7)(BGSe)is currently attracting considerable attention as a new type of infrared nonlinear crystal.We explored the synthesis of BGSe polycrystalline raw materials using both the two-temperature zone method and the high-pressure-assisted method,and designed a rapid purification method with a large temperature gradient to purify the synthesized polycrystalline material firstly.And then,the phase composition and impurity concentration of BGSe polycrystals before and after purification were characterized using powder X-ray diffraction(XRD),inductively coupled plasma mass spectrometry(ICP-MS)and energy-dispersive X-ray spectroscopy(EDS).The X-ray diffraction spectra are consistent with theoretical simulation results,showing no impurity peaks.ICP-MS test results also show a significant reduction in the content of metal impurities such as Fe,Al,and O impurity in the ingot after purification.The research can provide a raw material basis for the growth of high-quality single crystal.

关 键 词：材料 多晶合成 双温区法 高压辅助法 大温度梯度提纯 红外非线性晶体 

分 类 号：O78[理学—晶体学]