Magnetic behavior of a mixed Ising 3/2 and 5/2 spin model.
J Phys Condens Matter
; 23(17): 176003, 2011 May 04.
Article
em En
| MEDLINE
| ID: mdl-21493970
We perform Monte Carlo simulations in order to study the magnetic properties of the mixed spin-S = ± 3/2, ± 1/2 and spin-σ = ± 5/2, ± 3/2, ± 1/2 Ising model. The spins are alternated on a square lattice such that S and σ are nearest neighbors. We found that when the Hamiltonian includes antiferromagnetic interactions between the S and σ spins, ferromagnetic interactions between the spins S, and a crystal field, the system presents compensation temperatures in a certain range of the parameters. The compensation temperatures are temperatures below the critical point where the total magnetization is zero, and they have important technological applications. We calculate the finite-temperature phase diagrams of the system. We found that the existence of compensation temperatures depends on the strength of the ferromagnetic interaction between the S spins.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Biofísica
/
Magnetismo
Tipo de estudo:
Health_economic_evaluation
/
Risk_factors_studies
Idioma:
En
Revista:
J Phys Condens Matter
Assunto da revista:
BIOFISICA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Venezuela
País de publicação:
Reino Unido