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Phenomenological description of magnetic relaxation in magnetic crystals with induced anisotropy
Author(s) -
Lyakhimets S. N.
Publication year - 1992
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.2221740125
Subject(s) - condensed matter physics , anisotropy , non equilibrium thermodynamics , relaxation (psychology) , dissipation , magnetic anisotropy , physics , tensor (intrinsic definition) , phenomenological model , symmetry (geometry) , fluctuation dissipation theorem , magnetic domain , magnetization , magnetic field , thermodynamics , quantum mechanics , mathematics , psychology , social psychology , geometry , pure mathematics
A phenomenologic description of a magnetic dissipation in crystalline magnets with induced magnetic anisotropy is suggested. The components of the second‐order tensor describing the induced anisotropy are taken as thermodynamic variables and the nonequilibrium linear Onsager thermodynamics is formulated for them. Such an approach comprehends all symmetry aspects of the relaxation problem. With the help of the dissipation function the relaxation parameters and their angular dependences are calculated for spin waves and moving domain walls.