Growth of ZnSe crystals free from rod-like low angle grain boundaries from the melt under argon pressure

Abstract

ZnSe crystals free from rod-like low angle grain boundaries are reproducibly grown from the melt under a small temperature gradient of 12–22°C/cm by the Bridgman method under argon pressure. Because the ZnSe melt under argon pressure is highly supercooled, crucibles used under such small temperature gradients should be designed to compensate for the large supercooling. The supercooling is related to the melt composition, which is Se rich.