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On the existence of a spin‐glass state in an ising alloy model with mixed nearest‐neighbour exchange interactions
Author(s) -
Medvedev M. V.,
Rumyantsev E. L.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220850202
Subject(s) - antiferromagnetism , spin glass , ising model , ferromagnetism , condensed matter physics , exchange interaction , ground state , nearest neighbour , lattice (music) , spin (aerodynamics) , alloy , materials science , chemistry , physics , thermodynamics , quantum mechanics , artificial intelligence , computer science , composite material , acoustics
The possibility is investigated of a spin‐glass state as the ground state of a binary Ising magnet AB which is characterized (in the nearest neighbour approximation) by the competitive exchange interactions: I AA > 0; I AB > 0; I BB > 0. It is shown that due to increase of the antiferromagnetic component B concentration c in an intermediate concentration region either a spin‐glass state occurs or the first‐order phase transition from a random ferromagnetic state into a random antiferromagnetic one occurs depending upon exchange parameter ratios and crystal lattice type.