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Computer‐modelling techniques are applied to the calculation of defect formation and migration energies in α‐Fe 2 O 3 and α‐Cr 2 O 3 : both electronic and lattice defects are considered. The results are used to predict Arrhenius energies for cation and anion migration in different composition and temperature regimes and show reasonable agreement with experimental data where these are available.
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Catlow et al. (1988) studied this question.
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