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Exchange‐Conductivity Broadening of SSWR Line in Metallic Thin Films
Author(s) -
Jirsa M.
Publication year - 1982
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.2221130231
Subject(s) - condensed matter physics , laser linewidth , conductivity , magnetization , anisotropy , perpendicular , spin wave , line (geometry) , ferromagnetic resonance , materials science , spin (aerodynamics) , thin film , metal , physics , magnetic field , ferromagnetism , optics , thermodynamics , quantum mechanics , mathematics , laser , geometry , metallurgy
The exchange‐conductivity contribution to the linewidth of the spin‐wave resonance modes in a metallic film is derived analytically for arbitrary values of the spin‐pinning parameter β in the case of parallel as well as perpendicular static magnetisation, under the assumption of weak interaction between the spin‐ and the electromagnetic solution of the secular equation. Analytical results are compared with those obtained numerically for the full model. Very good agreement between the results of both models and a simple functional dependence of the analytical formulae on β gives a possibility to determine the surface anisotropy constant and other film parameters.