高温相偏硼酸钡单晶的下降法生长  

Growth of α-BaB_2O_4 Single Crystal by the Bridgman Method

作　　者：易守涛[1] 王升[1] 乐秀宏[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,上海201800

出　　处：《无机材料学报》2002年第5期1048-1050,共3页Journal of Inorganic Materials

摘　　要：采用坩埚下降法生长出了新型双折射晶体高温相偏硼酸钡α-BaB2O4单晶,尺寸为φ25mm×100mm,在He-Ne激光照射下无散射颗粒和生长条纹,在可见光区用复式宝石折射仪粗略测得该晶体的双折射率△n=0.13,在200～900nm光区的透过率>80％.简要介绍了晶体生长的一些基本参数.The high temperature phase barium metaborate α-BaB2O4 single crystal with 25mm in diameter, 100mm in height was grown by the Bridgman method. The data of crystal growth was briefly introduced. The results show that there is not any scattering particle examined under He-Ne laser in the crystal. And the birefractive index of this crystal in visible spectra is about △n≈0.13. The transmittance of the crystal obtained in 200～900nm is more than 80%.

关 键 词：单晶 坩埚 高温 相偏硼酸钡 下降法 双折射晶体 晶体生长 

分 类 号：O782[理学—晶体学] TQ174.758[化学工程—陶瓷工业]