Publicação: Tri-critical behavior of the Blume Capel model on a diamond lattice
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Data
2017-02-01
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Elsevier B.V.
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Artigo
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Acesso aberto
Resumo
The mean field approximation results are obtained in a five-site cluster on the diamond lattice from the Bogoliubov inequality. Spin correlation identities for the Blume-Capel model on diamond lattice are derived from a five-site cluster and used to obtain an effective field approximation. The free-energy, magnetization, critical frontiers and tricritical points are obtained from the mean field approximation and the effective field approximation and are compared to those obtained by other methods. From the mean-field approximation, we also studied the unstable and metastable states besides the stable states present in the model.
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Journal Of Magnetism And Magnetic Materials. Amsterdam: Elsevier Science Bv, v. 423, p. 175-182, 2017.
