非线性光学晶体BaBPO_5的生长、结构研究  

Study on the Growth,Structure of Nonlinear Optical Crystal BaBPO_5

作　　者：潘世烈[1] 吴以成[1] 傅佩珍[1] 张国春[1] 杜晨霞[2] 陈创天[1] 

机构地区：[1]中国科学院理化技术研究所北京人工晶体研究发展中心,北京100080 [2]郑州大学化学系,郑州450052

出　　处：《人工晶体学报》2003年第4期281-285,共5页Journal of Synthetic Crystals

基　　金：国家 973计划资助项目 (No.G19980 614 0 1)

摘　　要：本文采用顶部籽晶高温溶液法 ,以Li4P2 O7为助熔剂 ,生长了大尺寸BaBPO5单晶。进行了BaBPO5晶体的结构测定 ,结果表明该晶体属三方晶系 ,空间群 :P32 2 1,晶胞参数为a =b =0 .7132 9(10 )nm ,c =0 .70 36 8(14 )nm ,α =β =90° ,γ =12 0°,Z =3。该晶体结构中沿 [0 0 1]方向存在BO4四面体链 ,每一个硼氧四面体用它的两个顶点分别与两个PO4四面体相连组成螺旋状的链。硼氧四面体、磷氧四面体和钡氧多面体结合在一起形成一个三维网络结构。同时 ,对BaBPO5的粉末倍频效应进行了研究。The BaBPO_5 crystals with high optical quality were grown by Top-seeded Solution Growth (TSSG) method using Li_4P_2O_7 as the flux. The crystal structure was investigated.It belongs to the trigonal system, space group P 3_221,and lattice parameters a = b =0.71329(10)nm, c =0.70368(14)nm, α = β =90°, γ =120°, Z =3. BaBPO_5 contains single chains of BO_4 tetrahedra running parallel to [001], which are linked to terminal PO_4 tetrahedra to form spiral chains. The powder second harmonic generation of BaBPO_5 was measured.

关 键 词：BaBP05晶体 晶体结构 顶部籽晶法 倍频效应 线性光学晶体 晶体生长 

分 类 号：O78[理学—晶体学]