Crystal growth of Ba(B_(1-x)Al_x)_2O_4 using a new Fz furnace with double ring-shaped halogen lamp heater

摘要

A new Fz furnace with double ring-shaped halogen lamp heater which had a long heating zone was developed to grow Ba(B_(1-x)Al_x)_2O_4 crystals. The melt in Pt tube set in the new furnace was smoothly fed to the growth interface. As a result, Ba(B_(1-x)Al_x)_2O_4 (x = 0 and 0.05) single crystals, 20 mm in length and 1 mm in diameter, could be grown.