Magnetic Behavior of Diluted Magnetic Semiconductors

The magnetic characteristics of Diluted Magnetic Semiconductors are reviewed and related to the exchange interactions and mechanisms. The relevance of the long-range interactions in II–VI DMS is emphasized. An analytical expression for the radial dependence is derived from the freezing temperature and compared with theoretical predictions. The magnetic properties of Fe-DMS are summarized and interpreted on the basis of the dominant crystal field splitting effects. Recent studies on IV–VI Mn DMS are presented with the emphasis on the new phenomena of carrier induced ferromagnetism