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Magnetism of FePt surface alloys

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Honolka, J., Lee, T. Y., Kuhnke, K., Enders, A., Skomski, R., Bornemann, S., Mankovsky, S., Minar, J., Staunton, J. B., Ebert, H., Hessler, M., Fauth, K., Schuetz, G., Buchsbaum, A., Schmid, M., Varga, P. and Kern, K. (2009) Magnetism of FePt surface alloys. Physical Review Letters, Vol.102 (No.6). Article no. 06720. doi:10.1103/PhysRevLett.102.067207

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.102.067207

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Abstract

The complex correlation of structure and magnetism in highly coercive monoatomic FePt surface alloys is studied using scanning tunneling microscopy, x-ray magnetic circular dichroism, and ab initio theory. Depending on the specific lateral atomic coordination of Fe either hard magnetic properties comparable to that of bulk FePt or complex noncollinear magnetism due to Dzyaloshinski-Moriya interactions are observed. Our calculations confirm the subtle dependence of the magnetic anisotropy and spin alignment on the local coordination and suggest that 3D stacking of Fe and Pt layers in bulk L1(0) magnets is not essential to achieve high-anisotropy values.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 13 February 2009
Dates:
DateEvent
13 February 2009Published
Volume: Vol.102
Number: No.6
Number of Pages: 4
Page Range: Article no. 06720
DOI: 10.1103/PhysRevLett.102.067207
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: DFG, NSF
Grant number: SPP 1153, DMR-0747704, DMR-0213808

Data sourced from Thomson Reuters' Web of Knowledge

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