Określenie możliwych konfiguracji spinowych w sieci spinelowej NiFeAlO[4]

Abstract

This article contains the results of theoretical computations which serve a model of the ordering of magnetic moments in the NiFeAlO[4] spinel lattice on the base of molecular field theory assuming the crystal anisotropy. We can obtain the ground state spin configuration using the method of Lagrange. The X-ray experiments show that the crystal structure of this compound does not change in the critical temperature of magnetic ordering. The results of calculations show that the noncolinear ordering in tetraedr lattice is not possible but in octaedr lattice the triangle ordering can be realized.