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Compensation Temperature of a Mixed Ising Ferrimagnetic Model in the Presence of External Magnetic Fields

Published online by Cambridge University Press:  10 February 2011

G. M. Buendia ,
E. Machado  and
M. A. Novotny
G. M. Buendia
Affiliation:
Departamento de Física.Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela.
E. Machado
Affiliation:
Departamento de Física.Universidad Simón Bolívar, Apartado 89000, Caracas 1080, Venezuela.
M. A. Novotny
Affiliation:
Supercomputer Computations Research Institute, Florida State University, Tallahassee, FL 32306-4130, USA.
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Abstract

The behavior of the compensation temperature of a mixed Ising ferrimagnetic system on a square lattice in which the two interpenetrating square sublattices have spins σ (±1/2) and spins S (±1,0) has been studied with Monte Carlo methods. Our model includes nearest and next-nearest neighbor interactions, a crystal field and an external magnetic field. This model is relevant for understanding bimetallic molecular ferrimagnetic materials. We found that there is a narrow range of parameters of the Hamiltonian for which the model has compensation temperatures and that the compensation point exists only for small values of the external field.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 517: Symposium F – Wide Bandgap Semiconductors for High Power, High Frequency , January 1998 , 361
Copyright
Copyright © Materials Research Society 1998

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