2003 Volume 11 Issue 2 Pages 53-59
Bridgman growth of tin crystal was carried out in a graphite crucible that was fixed on a quartz supportrod or a copper one. The growth rate and axial temperature distribution were examined by recording thetemperature variation with time at each of four prescribed positions in the solid-liquid system duringsolidification. 1) Actual growth rate of crystal increased with progress of solidification while the furnaceelevated at a constant rate, but the tendency was different depending on the type of support rod used. 2) We could increase the temperature gradient in the crystal-melt system without varying the interface shape, ifwe used a copper support rod in place of a quartz one together with raising the maximum temperature ofthe furnace. 3) The thermal conductivity of the crucible support rod is thought to be an important factoraffecting the growth rate and temperature gradient in the growth system in the Bridgman process.