Random-anisotropy mixed-spin Ising on a triangular lattice
| Autor: | E. S. de Santana, A. S. de Arruda, M. Godoy |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Condensed Matter Physics, Vol 26, Iss 2, p 23601 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1607-324X 2224-9079 |
| DOI: | 10.5488/CMP.26.23601 |
| Popis: | We have studied the mixed spin-1/2 and 1 Ising ferrimagnetic system with a random anisotropy on a triangular lattice with three interpenetrating sublattices A, B, and C. The spins on the sublattices are represented by σ_A (states ±1/2), σ_B (states ±1/2), and S_C (states ±1, 0). We have performed Monte Carlo simulations to obtain the phase diagram temperature (k_B)T/|J| versus the strength of the random anisotropy D/|J|. The phase boundary between two ferrimagnetic FR_1 and FR_2 phases at lower temperatures are always first-order for p < 0.25 and second-order phase transition between the FR_1, FR_2 and the paramagnetic P phases. On the other hand, for values of p ⪆ 0.5, the phase diagram presents only second-order phase transition lines. |
| Databáze: | Directory of Open Access Journals |
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