“…Number of congruently melting fiber crystals including LiNbO 3 (LN) [1][2][3], Ca 3 (Li,Nb,Ga) 5 O 12 (CLNGG) [4], Y 3 A1 5 O 12 (YAG) [5,6], Bi 4 Ge 3 O 12 (BGO) [7], Tb 3 Ga 5 O 12 (TGG) [8], etc. was grown by micro-pulling-down (µ-PD) technique ( Fig.…”