Article ID Journal Published Year Pages File Type
1808348 Physica B: Condensed Matter 2016 5 Pages PDF
Abstract

The effects of the bimodal bilinear exchange interaction, ±J±J model, are investigated for the mixed-spin 1/2 and 3/2 Blume–Capel (BC) model on the Bethe lattice (BL). The bilinear exchange interaction is either turned on ferrimagnetically (J>0)(J>0) or turned off antiferrimagnetically (J<0)(J<0) with probabilities p   and 1−p1−p for the nearest-neighbor sites on the BL. The phase diagrams of the model are obtained with the inclusion of the crystal field interactions on the sites of spin-3/2 for the coordination number, q=3,4 and 6, for given p values. It was found that the model gives either second- or first-order phase transition lines for each given value of p. The temperatures of these lines increase with the increasing values of q.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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