| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000362585 |
| ISSN: | 0035-001X |
| Authors: | Espriella Vélez, N. de la1 Ortega López, C1 Torres Hoyos, F1 |
| Institutions: | 1Universidad de Córdoba, Departamento de Fisica, Montería, Córdoba. Colombia |
| Year: | 2013 |
| Season: | Mar-Abr |
| Volumen: | 59 |
| Number: | 2 |
| Pages: | 95-101 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| English abstract | We have studied the critical and compensation temperatures of a ferrimagnetic Ising system with mixed spins SiA= ±3/2, ±1/2 and σjB = ±5/2, ±3/2, ±1/2, by using Monte Carlo simulations. The spins are alternated on a square lattice, such that nearest neighbor interactions occur between different spins (SiA ↔ σjB) and next nearest neighbors interactions between spins of the same type (SiA ↔ SiA). We investigate the effects of crystal field D and the J2 ferromagnetic coupling of spins SiA on the critical and compensation temperatures of the system, calculating the phase diagrams at finite temperature at the (D/|J1| ,kBT/|J1|) and (J2/|J1|,kBT/|J1|) planes. When the Hamiltonian includes antiferromagnetic couplings between spins SiA and σjB, ferromagnetic between spins SiA and the term of single ion anisotropy D, the system presents compensation temperatures in a certain range of parameters, which depend on the intensity of the ferromagnetic interaction of spins SiA |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Modelo de Ising, Monte Carlo, Temperatura crítica, Temperaturas de compensación, Campo cristalino |
| Keyword: | Physics and astronomy, Condensed matter physics, Ising model, Monte Carlo, Critical temperature, Compensation temperatures, Crystal field |
| Full text: | Texto completo (Ver PDF) |
