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Ising Ferromagnet with Biquadratic Exchange Interaction and Uniaxial Anisotropy
Author(s) -
Iwashita T.,
Uryǔ N.
Publication year - 1986
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.2221370108
Subject(s) - condensed matter physics , ising model , ferromagnetism , anisotropy , spins , antiferromagnetism , magnetization , spin (aerodynamics) , physics , exchange interaction , curie temperature , quantum mechanics , magnetic field , thermodynamics
For Ising ferromagnets with S = 1, S = 3/2, and S = 2, the magnetization 〈 S z 〉 and the Curie temperature T C are calculatded with the use of pair mode lapproximation. Assuming the bilinear and biquadratic exchange interactions ( J and J ′) between nearest‐neighbouring pair of spins and the uniaxial single‐ionic anisotropy D for each spin, the behaviours of 〈 S z 〉 and T C as a function of these exchange parameters and the uniaxial anisotropy parameter are investigated for the Ising spin systems with various values of the spin.