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中国物理学会期刊

Ni-FeCr多层膜的磁各向异性和自旋波谱

CSTR: 32037.14.aps.40.1364

MAGNETIC ANISOTROPY AND SPIN SPECTRA IN Ni-FeCr MULTILAYER FILMS

CSTR: 32037.14.aps.40.1364
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  • Ni-FeCr多层模采用直流溅射法制备。由拟合铁磁一致共振场的角度关系确定它们具有单铀磁各向导性。各向异性能可表示为:EK=K1sin2θ+K2sin4θ,其中K2/K1≈0.59。然而,表面模的特性揭示这些多层膜表面和界面的各向异性并非单轴型。我们认为这源于在表面和界面的交换耦合作用。

     

    Ni-FeCr multilayer films were prepared by diode sputtering technique. These multilayer films exhibit magnetic uniaxial anisotropy that is shown by fitting the anglar dependence of ferromagnetic uniform resonance field. The anisotropy energy could be expressed by EK=K1sin2θ+K2sin4θ, where K2/K1≈0.59. However the behavior of surface mode suggests that che surface and interface anisotropy of these multilayer films is not of the uniaxis type. We consider that is caused by the exchange coupling at the surface and interface.

     

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