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Effects of Surface Spin Waves and Surface Anisotropy in Magnetic Thin Films at Finite Temperatures
Author(s) -
Levy DiepTheHung, J. C. S.,
Nagai O.
Publication year - 1979
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.2220930141
Subject(s) - condensed matter physics , antiferromagnetism , spin wave , anisotropy , materials science , magnetization , ferromagnetism , ferromagnetic resonance , thin film , surface (topology) , spin (aerodynamics) , physics , magnetic field , optics , thermodynamics , nanotechnology , quantum mechanics , geometry , mathematics
The validity of the Green function theory developed by Haubenreisser et al. for ferromagnetic thin films (TF) is investigated. Their method, although to rough for the calculation of magnetization spatial distribution, is found useful for the calculation of critical temperature. By using their method, the effect of surface spin wave modes on the critical temperature is analyzed of both ferro‐ and antiferromagnetic TF. The film thickness dependence and the surface anisotropy dependence of the critical temperature are presented. The condition of the appearance of the so‐called “hard surface” and “pinned spin wave” is discussed. The effect of temperature in ferro‐ and antiferromagnetic resonance is also studied.