Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8943554 | Journal of Magnetism and Magnetic Materials | 2019 | 5 Pages |
Abstract
The mean field approximation from the Bogoliubov inequality is applied to study the ferromagnetic Ashkin-Teller model in three dimensions. Phase transitions for the stable, metastable and unstable states is observed. From the critical values in the free energy of the model, those transitions are classified. Besides the free energy, magnetization, critical frontiers and tricritical points are obtained. Phase diagram is presented for a better illustration of the phase transitions and its order.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J.P. Santos, J.A.J. Avila, D.S. Rosa, R.M. Francisco,