[12p-A201-1~8] 15.1 Bulk crystal growth

[12p-A201-3] Growth of Yb:CaGdAl₃O₇ single crystals by the traveling-solvent floating zone method

〇Mikio Higuchi^1,2, Fujii Gen¹, Masubuchi Yuji¹, Ogawa Takayo², Wada Satoshi² (1.Hokkaido Univ., 2.RIKEN)

Keywords:Melilite-type oxide, Incongruent melting, Traveling-solvent floating zone method

CaGdAl₃O₇ with melilite structure was found to melt incongruently, and we accordingly attempted to grow Yb-doped crystals by the traveling solvent floating zone (TSFZ) method. Even if the liquid phase composition coexisting with CaGdAl₃O₇ is unknown, the double-pass TSFZ, which we have developed, enables to obtain the target phase from the initial stage of the growth and to maintain stable crystal growth.