Local magnetic properties of ultrathin ferromagnetic fcc-Fe-films on Cu(001)

Fuest, A.; Ellerbrock, R. D.; Schatz, Axel; Keune, W.; Brand, R. A.; Pfannes, H.‐D.

doi:10.1007/bf02065770

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Based on experimental [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] and theoretical studies, 1-26 consensus has been reached that for Fe films deposited by thermal deposition on Cu͑001͒ at room temperature ͑RT͒ three different coverage regimes exist with distinctly different structural and magnetic properties. These are commonly referred to as the ferromagnetic ͑FM͒ regime ͑I͒ up to about 4 monolayers ͑ML͒ ͑1 MLª1.53ϫ 10 15 atoms/ cm 2 ͒, where the whole film is FM with a magnetization direction normal to the film plane.…”

Section: Introductionmentioning

confidence: 99%

Layer relaxation and intermixing inFe∕Cu(001)studied by surface x-ray diffraction

et al. 2005

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The structure of Fe films thermally deposited on Cu͑001͒ was analyzed using surface x-ray diffraction in the coverage range between 6 and 8 monolayers. Based on the analysis of crystal truncation rod data measured at 120 and 300 K, i.e., below and above transition temperatures reported for ferro-and antiferromagnetic ordering, no changes of the interlayer spacings larger than about ±0.015 Å are found. Within the Fe film these correspond to fcc Fe ͑1.78 Å͒, while the top-layer spacing is expanded by 3-5 % in agreement with previous low-energy electron diffraction studies. Lateral disorder of surface atoms as described by the Debye parameter indicates displacements of the top-layer positions up to 0.23 Å corresponding to zigzag displacements observed in the p2mg ͑2 ϫ 1͒ superstructure. The inherent large penetration depth of the x rays also allowed the study of the structure and composition of the buried Fe/ Cu interface. The data indicate Fe-Cu intermixing, where nearly 50% of a Fe ͑Cu͒ monolayer are exchanged. Four layers across the interface are significantly affected. About 30% of the first Fe ͑Cu͒ and up to 15% of the second Fe ͑Cu͒ layer is alloyed by Cu ͑Fe͒.

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