Phenomenological description of magnetic relaxation in magnetic crystals with induced anisotropy

Abstract

AbstractA 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.