Magnetism of FePt Surface Alloys | Zendy

J. Honolka | Zendy; T. Y. Lee | Zendy; Klaus Kuhnke | Zendy; Axel Enders | Zendy; R. Skomski | Zendy; S. Bornemann | Zendy; S. Mankovsky | Zendy; J. Minář | Zendy; J. B. Staunton | Zendy; H. Ebert | Zendy; M. Heßler | Zendy; K. Fauth | Zendy; Gisela Schütz | Zendy; Andreas Buchsbaum | Zendy; Michael Schmid | Zendy; П. Варга | Zendy; Klaus Kern | Zendy

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Magnetism of FePt Surface Alloys

Author(s) -

J. Honolka,

T. Y. Lee,

Klaus Kuhnke,

Axel Enders,

R. Skomski,

S. Bornemann,

S. Mankovsky,

J. Minář,

J. B. Staunton,

H. Ebert,

M. Heßler,

K. Fauth,

Gisela Schütz,

Andreas Buchsbaum,

Michael Schmid,

П. Варга,

Klaus Kern

Publication year - 2009

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.102.067207

Subject(s) - magnetism , scanning tunneling microscope , condensed matter physics , materials science , stacking , magnetic circular dichroism , magnetic anisotropy , anisotropy , ab initio , ab initio quantum chemistry methods , spin (aerodynamics) , magnetization , nuclear magnetic resonance , physics , magnetic field , spectral line , optics , quantum mechanics , astronomy , molecule , thermodynamics

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.

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