Flat Ferromagnetic, Epitaxial 48Ni/52Fe(111) Films of few Atomic Layers
書誌事項
- 公開日
- 1968-01
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/pssb.19680270133
- 公開者
- Wiley
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説明
<jats:title>Abstract</jats:title><jats:p>Flat epitaxial 48Ni/52Fe(111) films are prepared by evaporation onto atomically flat Cu(111) films. All films consisting of three or more layers (d ≧ 6 Å) show a far‐reaching fit to the model structure of a flat single crystal. The magnetic properties are determined for (70 ≦ <jats:italic>T</jats:italic> ≦ 400) °K with an oscillation type torsion magnetometer, which can detect a moment of 5 × 10<jats:sup>−8</jats:sup> G cm<jats:sup>3</jats:sup>. All films of three or more layers are ferromagnetic without any indication of superparamagnetism; Curie‐temperature and magnetization decrease monotonously with film thickness; there is good qualitative agreement with spin‐wave theory and Green's function theory; the magnetization is independent of the field, however, within 1%, for (300 ≦ <jats:italic>H</jats:italic> ≦ 5000) Oe, while the theory predicts considerable dependence on the field. Strong anisotropies relating to the surface normal as easy axis may easily be interpreted as Néel‐type surface anisotropies.</jats:p>
収録刊行物
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- physica status solidi (b)
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physica status solidi (b) 27 (1), 313-324, 1968-01
Wiley