Abstract
Self-diffusion of Mn in powder compacts of α-MnS has been studied with the use of the radioactive tracer 54Mn. The experiments were carried out between 1073 K and 1323 K and in the sulfur vapour pressure interval (10 ÷ 4 · 10 3) Pa by means of the tracer-sectioning method. It was confirmed that under the conditions used in this experiment the dominant point defects are doubly charged vacancies and electron holes. The activation energy of the diffusion equals (142 ± 10) kJ/mol.
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