溶融SnをフラックスとするVa-Sn-Ge(Va＝Nb,Ta,V)系化合物の結晶成長及び特性
(Self-Component Flux Growth and properties in the Systems of Va-Su-Ga and Va-Sn-Ge(Va＝Nb,Ta,V)Compounds sing Molten Tin as solve)