연속성장법(Orrms method)에 의한 $LiNbO_{3}$ 단결정 성장 : (I) 결정성장을 중심으로

$LiNbO_{3}$ single crystal growth by the continuous growth method (Orrms method) : (I) On the growth process

A continuous growth method (Orr's method) were developed to grow LiNbO3 single crystals. The optimum growth condition established are as follows; When the controlled temperature of a platinum crucible were 1190℃∼1210℃, the pulling rate was 2 mm/hr, the feeding rate was 1.5∼2.5 g/hr, and the rotation speed was 20 rpm. The phase and growth orientation of the grown LiNbO3 crystals wer characterized by a X-ray diffraction method. The overflowing phenomena, which induced cracking into the grown crystal during the process, was effectively suppressed by the control of the growth parameter.