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Numerical Study of a Three-Dimensional Mixed Ising Ferrimagnet in the Presence of an External Field

✍ Scribed by G.M. Buendía; N. Hurtado

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
123 KB
Volume
220
Category
Article
ISSN
0370-1972

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✦ Synopsis

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 s AE1=2 and spins S 0; AE1 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 s AE1=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.

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