The temperature dependence of the bilinear and biquadratic exchange coupling in Fe/Cu, Ag/Fe(001) structures
作者： Z. Celinski , B. Heinrich , J.F. Cochran
DOI: 10.1016/0304-8853(94)00435-T
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摘要: Abstract The exchange coupling through non-magnetic metallic layers is described by bilinear (− J 1 cos( θ )) and biquadratic ( 2 cos terms. In simple metals such as Cu(001) Ag(001) the exhibits strong short wavelength oscillations (∼ ML). non-ferromagnetic interlayers in this case strongly affected interface roughness. Realistic interfaces consist of finite terraces which results variations interlayer thickness. Slonczewski showed that term can be produced frustrations local magnetic moments. presented studies we used MOKE FMR techniques to investigate temperature dependence Fe/Cu/Fe(001) Fe/Ag/Fe(001) structures. Quantitative were carried out range 77–400 K. By growing first Fe layer at various substrate temperatures one prepare samples possessing with a variable atomic terrace width. That way controlle strength coupling. Two limits investigated: (a) ⪡ (b) ∼ . It was found scales linearly will discussed within framework existing theories.
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