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Magnetic Properties of the Ising Model with a Free Surface
Author(s) -
Tamura I.,
Sarmento E. F.,
Fittipaldi I. P.,
Kaneyoshi T.
Publication year - 1983
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.2221180148
Subject(s) - ising model , condensed matter physics , magnetization , surface (topology) , ferromagnetism , phase diagram , square lattice ising model , physics , phase (matter) , magnetic field , materials science , statistical physics , mathematics , quantum mechanics , geometry
The magnetic properties in a semi‐infinite ferromagnetic Ising model with enhanced surface couplings are studied by means of a new type of correlated effective field theory. For suitably enhanced surface exchange couplings J s = J (1 + Δ) there are surface orderings. A phase diagram, magnetization curves for surface and bulk, and short‐range order parameters are calculated.