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Contribution to the Theory of the Spin 5/2 Blume‐Capel Model
Author(s) -
Kaneyoshi T.,
Jaščur M.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221750119
Subject(s) - ising model , phase diagram , square lattice ising model , paramagnetism , condensed matter physics , spin (aerodynamics) , differential operator , physics , lattice (music) , basis (linear algebra) , statistical physics , mathematics , mathematical physics , phase (matter) , quantum mechanics , mathematical analysis , thermodynamics , geometry , acoustics
The exact formulation of the spin‐5/2 Blume‐Capel (BC) model is given on the basis of both the exact Ising spin identities and the differential operator technique. The general expressions for evaluating the phase diagram and paramagnetic susceptibility of the spin‐5/2 BC model are obtained within the statistical accuracy equivalent to the Zernike approximation of the spin‐1/2 Ising model. Some numerical results for the phase diagram and paramagnetic susceptibility of the spin‐5/2 BC model on the honeycomb lattice are given.