Mechanisms of thermal transformation of zinc blende to [NaCl] in MnS crystals

Single crystals of zinc blende phase MnS transform at 200°C to single crystals of NaCl] phase by single diffusive jumps of the cations. Dimensional changes cause random distortion of the crystal. Evidence is also presented for a second structural correspondence in which {111} zinc blende planes become {100} NaCl] planes. The corresponding deformational mechanism might be favored at low temperatures.