1998/06/04 by G. M. Buendia, E. Machado, M. A. Novotny
Physics and Astronomy · #cond-mat.mtrl-sci #cond-mat.stat-mech
published as `High-Density Magnetic Recording and Integrated Magneto-Optics: Materials and Devices', Materials Research Society Symposium Proceedings, Vol. 517, p. 361-366, 1998; editors J. Bain, M. Levy, J. Lorenzo, T. Nolan, Y. Okamura, K. Rubin, B. Stadler, and R. Wolfe · 6 pages, 4 figures, to be published in the Materials Research Society, Symposium L proceedings. Spring 1998
arxiv created 1998/06/04 · arxiv updated 2009/11/30
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.