Macro-segregation and micro-segregation of S in crystals which had been grown from In solutions by using the travelling heater method (under micro-gravity or normal gravity conditions) were analyzed by using spatially resolved photoluminescence methods. It was found that, whereas macro-segregation in both terrestrially-grown and space-grown crystals could be explained by conventional steady-state models which were based upon the Burton-Prim-Slichter theory, micro-segregation could be explained only in terms of the non steady-state step-exchange model.

A.N.Danilewsky, Y.Okamoto, K.W.Benz, T.Nishinaga: Japanese Journal of Applied Physics, 1992, 31[1-7], 2195-201