Understanding the magnetic anisotropy in Fe-Si amorphous alloys

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The origin of the magnetic anisotropy in a very disordered Fe-Si alloy has been investigated. The alloy containing 40 percent at. Si was prepared in the form of a thin film in a DC magnetron sputtering chamber. Structural disorder was obtained from Extended X-ray Absorption Fine Structure spectroscopy. The uniformity and lack of inhomogeneities at a microscopic level was checked by measuring their transverse magnetic susceptibility and hysteresis loops. The orbital component of the magnetic moment was measured by X-ray Magnetic Circular Dichroism spectroscopy. The orbital moment was extraordinary high, 0.4mB. Such a high value contrasted with the relatively small ... continued below

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Diaz, J.; Hamdan, N.M.; Jalil, P.; Hussain, Z.; Valvidares, S.M. & Alameda, J.M. August 1, 2002.

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The origin of the magnetic anisotropy in a very disordered Fe-Si alloy has been investigated. The alloy containing 40 percent at. Si was prepared in the form of a thin film in a DC magnetron sputtering chamber. Structural disorder was obtained from Extended X-ray Absorption Fine Structure spectroscopy. The uniformity and lack of inhomogeneities at a microscopic level was checked by measuring their transverse magnetic susceptibility and hysteresis loops. The orbital component of the magnetic moment was measured by X-ray Magnetic Circular Dichroism spectroscopy. The orbital moment was extraordinary high, 0.4mB. Such a high value contrasted with the relatively small uniaxial anisotropy energy of the thin film (2kJ/m3). This suggests that the cause of the magnetic anisotropy in this alloy was a small degree of correlation in the orientation of the local orbital moments along a preferential direction.

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INIS; OSTI as DE00820783

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  • Other Information: PBD: 1 Aug 2002

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  • Report No.: LBNL--50856
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/820783 | External Link
  • Office of Scientific & Technical Information Report Number: 820783
  • Archival Resource Key: ark:/67531/metadc734621

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 2002

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 4, 2016, 3:52 p.m.

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Diaz, J.; Hamdan, N.M.; Jalil, P.; Hussain, Z.; Valvidares, S.M. & Alameda, J.M. Understanding the magnetic anisotropy in Fe-Si amorphous alloys, report, August 1, 2002; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc734621/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.