Abstract
The total energies are evaluated for magnetic phases of electron-doped manganites using energy bands E( k ) accounting for the orbital degeneracy of e g-band of manganese for the main A-, C-, G- and F-types of spin and orbital order. To determine the magnetic and orbital configuration, a minimization of the ground state energy with respect to the cant angle between the spins of Mn 4+ ions and e g orbital angles of the two magnetic sublattices has been performed. A phenomenological account of the small splitting of e g-level stabilizes the collinear spin structures with the corresponding ferromagnetic orbital order.
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