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Thermodynamical Behaviour of the Uniaxial Crystals of “Easy‐Axis” Type with Diverse Origins of Magnetic Anisotropy
Author(s) -
Kazakov A. A.,
Kleshev S. M.
Publication year - 1984
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.2221210212
Subject(s) - anisotropy , condensed matter physics , ferromagnetism , magnetization , function (biology) , excited state , magnetic anisotropy , physics , spin wave , spin (aerodynamics) , simple (philosophy) , magnetic field , quantum mechanics , thermodynamics , evolutionary biology , biology , philosophy , epistemology
Instead of solving the set of the 2 s equations for the Green function of a ferromagnetic with singleion and two‐ion anisotropy of arbitrary order, it is suggested to solve a single equation for the parametric Green function. Green's function, low‐temperature spectrum, and magnetization are calculated for an anisotropic ferromagnet with arbitrary spin. In the low‐temperature region one spin wave branch is excited and as a consequence the thermodynamical behaviour of the system is particularly simple.