A typical defect in the Bridgman-grown LBO crystals
A typical macro-defect, a veil-like layer in the Bridgman-grown <110> LBO crystals, was discovered. The veil-like layer seems to be a semi-transparent veil which covers the whole or partial cross section in the growth direction. The mechanism for formation of the veil-like layer defect has been explored by determining morphology and distribution of the defect and analyzing the relationship between the crystal growth conditions and the defect. The veil-like layer defect is microcrack in which there is decomposition on surface of the crack or deposition of vapor of LBO melt in as-grown LBO crystals.