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We review magnetic properties of Mn, Co and Fe based Semimagnetic Semiconductors. Different energy structures of Mn, Co and Fe ions results in different magnetic behaviour (Brillouin-type or Van Vleck-type paramagnetism). In spite of that, for all the materials, specific heat, susceptibility and magnetization reveal d – d exchange interaction between the magnetic ions. We examine the interaction strength and range. Finally possible mechanisms behind the ion–ion interaction are discussed.
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A. Twardowski (1991) studied this question.
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