Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1801217 | Journal of Magnetism and Magnetic Materials | 2010 | 4 Pages |
Abstract
A two-sublattice Ising metamagnet in both uniform and random fields is studied within the mean-field approach based on Bogoliubov's inequality for the Gibbs free energy. We show that the qualitative features of the phase diagrams are dependent on the parameters of the model and the uniform field values. The tricritical point and reentrant phenomenon can be observed on the phase diagram. The reentrance is due to the competition between uniform and random interactions.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Ya-Qiu Liang, Guo-Zhu Wei, Xiao-Juan Xu, Guo-Li Song,