MORPHOLOGY AND STRUCTURE OF ZNCR2O4 SPINEL CRYSTALLITES

Computer simulation techniques have been used to predict the crystal m orphology of the spinel ZnCr2O4. In agreement with experiment, crystal lites are predicted to be essentially octahedral with the {111} surfac e dominating the structure. However, surfaces for materials with the s pinel structure are highly complex and stabilized only by the formatio n of surface defects. This leads to a large number of different possib le surface structures.