Method of growing single crystal of beta -barium borate

摘要

In growing a single crystal of beta -BaB2O4 from a melt of BaB2O4 by the Czochralski method, crushed single crystal particles of either beta -BaB2O4 or alpha -BaB2O4 are used as the starting material of the melt. The primary advantage of using the crushed single crystal particles resides in that transformation of a polycrystal initially nucleated on a platinum rod, which is brought into contact with the melt in place of a seed crystal, to single crystal can be accomplished in a greatly shortened time. In consequnce, high quality single crystals are obtained at good yield.