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Monte‐Carlo Study of Two‐Dimensional Antiferromagnets with Competing Anisotropies
Author(s) -
Aplesnin S. S.
Publication year - 1988
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.2221490129
Subject(s) - monte carlo method , antiferromagnetism , condensed matter physics , spins , anisotropy , physics , phase diagram , paramagnetism , radius , oblique case , spin (aerodynamics) , plane (geometry) , phase (matter) , geometry , optics , mathematics , thermodynamics , quantum mechanics , statistics , linguistics , philosophy , computer security , computer science
Phase diagrams of the ground state of the “easy plane” (EP) and “easy axis” (EA) antiferromagnet, the “oblique” phase, and the spin glass are calculated by the Monte‐Carlo method for an antiferromagnet with random distribution of competing anisotropies. The radial distribution function of spins in the plane and along “easy axes” and the correlation radius of EA and EP phases near the critical concentration of the transition are obtained. The phase diagram of the antiferromagnet, the “oblique” AF, and the paramagnet is estimated for the constant of anisotropy (EA) D ∥ = J , (EP) D ⟂ = −5 J in the variables concentration and temperature.