On the theory of indirect exchange in EuO
  We present the calculations of the Curie temperature and magnetization of doped EuO both in the absence and in the presence of external magnetic field. The calculations were performed both for the free electrons model and for the model with finite electron band width. Both models give similar results for the magnetization, close to Brillouin function. 
S. Burg, V. Stukalov, and E. Kogan
cond-mat.mtrl-sci