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We discuss properties of bound magnetic polarons in an antiferromagnetic semiconductor placed in an external magnetic field. When the strength of the exchange coupling between the electron spin and local moments is increased, there can be an abrupt transition between a large and a small bound magnetic polaron. Associated with the bound state is a large ferromagnetic moment; our theory provides a quantitative account of magnetization data on EuTe.
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Mauger et al. (1984) studied this question.
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