J. Phys. IV France 07 (1997) C1-175-C1-176
Critical Behavior of a Mixed Ising FerrimagnetG.M. Buendía1 and M.A. Novotny2
1 Departamento de Física, Universidad Simón Bolívar, Apdo. 89000, Caracas 1080, Venezuela
2 Supercomputer Computations Research Institute, Florida State University and Department of Electrical Engineering, Florida A&M, Florida State University, Tallahassee, Florida 32310-6046, U.S.A.
The critical behavior of a 2-D mixed ferrimagnetic spin2-spin1/2 Ising model has been studied with Monte Carlo and transfer-matrix techniques. This model is relevant for understanding bimetallic molecular ferrimagnetic materials. We calculate the finite temperature phase diagram putting special attention to the location and characterization of compensation points. We found that a compensation temperature appears when the interaction between the next-nearest neighbors spins 1/2 is included.
© EDP Sciences 1997