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Numerical Study of a Three‐Dimensional Mixed Ising Ferrimagnet in the Presence of an External Field
Author(s) -
Buendía G.M.,
Hurtado N.
Publication year - 2000
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/(sici)1521-3951(200008)220:2<959::aid-pssb959>3.0.co;2-k
Subject(s) - ferrimagnetism , spins , condensed matter physics , monte carlo method , ising model , phase diagram , hamiltonian (control theory) , physics , lattice (music) , ground state , statistical physics , magnetic field , quantum mechanics , phase (matter) , mathematics , magnetization , mathematical optimization , statistics , acoustics
We present a numerical study based on a Monte Carlo algorithm of the magnetic properties of a mixed Ising ferrimagnetic model on a cubic lattice where spins σ = ±1/2 and spins S = 0, ±1 are in alternating sites on the lattice. We carried out exact ground state calculations and employ a Monte Carlo simulation to obtain the finite‐temperature phase diagram of the model. A compensation point appears when the next‐nearest‐neighbor interaction between the spins σ = ±1/2 exceeds a minimum value. We found a strong dependence of the compensation temperature with the interactions in the Hamiltonian, particularly the crystal and the external field. An applied field can change the range of values of the compensation temperature from zero up to a maximum value that depends on the field.