Magnetic Anisotropy of Fe/SiO_2 Multilayer Film

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概要

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• This paper investigates the in-plane magnetic anisotropy of Fe/SiO_2 multilayer film. Fe/SiO_2 film exhibits field-induced uniaxial anisotropy which depends strongly on the Fe and SiO_2 layer thickness. Maximum uniaxial anisotropy leads to minimum coercivity. The interfaces between Fe and SiO_2 layers deteriorate uniaxial anisotropy. There is no correlation between the anisotropy field and magnetostriction. No in-plane anisotropy of the film stress, crystal orientation, or crystal grain shape is observed in Fe/SiO_2 film prepared with an external field. Also, the Fe layer maintains the same atomic state as bulk-Fe. The multilayering effects, such as magnetostatic coupling between Fe layers and small crystal grains, play an important role in making anisotropy dispersions small, and enhancing the uniaxial anisotropy of Fe layers in Fe/SiO_2 film.

• 社団法人応用物理学会の論文
• 1991-01-15

著者

• Nagai Yasuhiro

  Nit Applied Electronics Laboratories

• SENDA Masakatsu

  NIT Applied Electronics Laboratories

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• Magnetic Anisotropy of Fe/SiO_2 Multilayer Film
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