A DISCUSSION ON LONG-RANGE ORDER IN Nb_3 (Al,Ge) COMPOUND WITH A-15 STRUCTURE

A discussion has been made of the possible ordering structure in type A-15 compound Nb_3(Al_(0.75 Ge_(0.25))given previously by Kitchingman et al. The correct X-ray structure factors for several possible ordering structures of this compound are suggested and it is pointed out that the conclusion drawn by Kitchingman etal. seems to be doubtful.