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Monte Carlo calculation of Ising model with single‐site anisotropy energy in ferromagnetic iron nitride system
Author(s) -
Liu Junyou,
Zhang Lanting,
Shan Aidang
Publication year - 2007
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.200642538
Subject(s) - condensed matter physics , magnetization , cubic crystal system , curie temperature , ising model , ferromagnetism , anisotropy , monte carlo method , internal energy , lattice (music) , magnetic anisotropy , physics , materials science , magnetic field , thermodynamics , quantum mechanics , mathematics , statistics , acoustics
The magnetic behavior of a mixed Ising ferromagnetic system on Fe 4 N expended face‐center cubic lattice, with single‐site anisotropy, has been studied with Monte Carlo Simulation. The expended face‐center cubic lattice was divided into one simple cubic lattice composed of Fe(I) at the corner site and three inhomogeneous simple cubic lattices composed of Fe(II) at the face‐centered one. The two sublattices have spin‐3/2 and spin‐1, respectively. The model includes nearest interactions and single‐site anisotropy terms. By studying magnetization, internal energy, specific heat of this model at different temperatures, we found that the absolute zero value of magnetization is changed by existence of Fe(I)'s and Fe(II)'s crystal‐field interactions ( D 1 , D 2 ). The final value of internal energy is different for different D 1 and D 2 . Curie temperature is increasing with the increase of D 1 and D 2 . Especially, equal point of sublattice magnetization was recognized, when D 1 was changed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)