Donor impurity band exchange in dilute ferromagnetic oxides.

  title={Donor impurity band exchange in dilute ferromagnetic oxides.},
  author={J M D Coey and Munuswamy Venkatesan and Caragh B. Fitzgerald},
  journal={Nature materials},
  volume={4 2},
Dilute ferromagnetic oxides having Curie temperatures far in excess of 300 K and exceptionally large ordered moments per transition-metal cation challenge our understanding of magnetism in solids. These materials are high-k dielectrics with degenerate or thermally activated n-type semiconductivity. Conventional super-exchange or double-exchange interactions… CONTINUE READING

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