Abstract
The conditions of the appearance of conical incommensurate structures have been studied analytically for a ferrimagnet with the geometrically frustrated exchange between spins in different magnetic positions (subsystems) and the competition between exchanges in one of the subsystems. The phase transition temperatures to the conical states have been determined. The types of phase transitions have been determined by the numerical minimization of the free energy and (temperature–exchange parameters) phase diagrams have been obtained.
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Original Russian Text © S.N. Martynov, 2015, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheckoi Fiziki, 2015, Vol. 102, No. 2, pp. 111–116.
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Martynov, S.N. Symmetrical conical incommensurate structures of a frustrated isotropic Heisenberg ferrimagnet. Jetp Lett. 102, 100–104 (2015). https://doi.org/10.1134/S0021364015140076
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DOI: https://doi.org/10.1134/S0021364015140076