Abstract :
We have verified that the variational mean field theory approach suggested by Narimanov and Varma (preprint cond-mat/0002191) being applied to the realistic two-band model provides a good agreement with experimental data for the Curie temperature in doped manganites A1−xBxMnO3 (x≃0.3). We have also considered the problem of an interplay between the ferromagnetic and antiferromagnetic interactions by using the same approach.
