熔盐提拉法生长β-BaB_2O_4晶体  

Growth of β-BaB_2O_4 Crystals from Molten Salts by the Top-seeded Pulling Technique

作　　者：唐鼎元[1] 林斯太 戴桂琴 林绮[1] 曾文荣[1] 赵庆兰[1] 黄依森[1] 

机构地区：[1]中国科学院福建物质结构研究所

出　　处：《人工晶体学报》1990年第1期21-27,共7页Journal of Synthetic Crystals

摘　　要：采用熔盐提拉法从 Na_2O 等助熔剂中生长出高光学质量的非线性光学材料β-BaB_2O_2晶体。最大的透明晶体尺寸达φ46×18mm。晶体生长适宜的拉速和转速分别为0.5—1.0mm/day 和4—8r/min。研究了籽晶的方向对生长速度和质量的影响,讨论了 BBO 晶体生长过程中的固液界面形状问题。最后报导了晶体中一些缺陷。High quality nonlinear optical crystals of β-BaB_2O_4 were grownfrom Na_2O flux by the top-seeded pulling technique.Transparent crystals upto 46mm in diameter and 18mm in length have been obtained.It is found thatthe suitable pulling rates and rotation rates are 0.5—1.0mm/d and4—8 r/min,respectively.The effects of seed orientation on the growth rate and qualityare studiedThe.problems of the shape of solid-liquid interface formed duringthe growth as well as the crystal defects are discussed.

关 键 词：熔盐提拉法 偏硼酸钡 晶体 

分 类 号：O614.233[理学—无机化学]