Аннотация
An extensive study of the magnetic anisotropy energies (MAE's) of
the high-moment ferromagnetic phase of fcc Fe/Cu(001) overlayers
and interlayers is presented in terms of the fully relativistic spin-polarized
screened Korringa-Kohn-Rostoker method. Independent of the film thickness
for free surfaces the orientation of the magnetization is found to
be in-plane, while for capped films a perpendicular magnetization
is predicted up to a switching thickness of five Fe monolayers. Based
on an analysis of layer-resolved anisotropy energies it is shown
that the main contribution to the MAE's arises from the Fe layer
at the Fe/Cu interfaces. Particular features of the MAE's with respect
to the number of cap layers as well as to the film thickness can
be viewed in terms of an interfacial hybridization between Fe and
Cu. By using the coherent-potential approximation the interdiffusion
between the substrate and the magnetic film is shown to reduce the
MAE dramatically.
Пользователи данного ресурса
Пожалуйста,
войдите в систему, чтобы принять участие в дискуссии (добавить собственные рецензию, или комментарий)