Magnetism of FePt surface alloys

J. Honolka; T. Y. Lee; K. Kuhnke; A. Enders; R. Skomski; S. Bornemann; S. Mankovsky; J. Minár; J. Staunton; H. Ebert; M. Hessler; K. Fauth; G. Schütz; A. Buchsbaum; M. Schmid; P. Varga; K. Kern

doi:10.1103/PhysRevLett.102.067207

Magnetism of FePt surface alloys

J. Honolka
, T. Y. Lee
, K. Kuhnke
, A. Enders
, R. Skomski
, S. Bornemann
, S. Mankovsky
, J. Minár
, J. Staunton
, H. Ebert
, M. Hessler
, K. Fauth
, G. Schütz
, A. Buchsbaum
, M. Schmid
, P. Varga
, K. Kern

Max Planck Institute for Solid State Research
University of Nebraska Lincoln
Ludwig-Maximilians-Universität München
University of Warwick
Max Planck Institute for Intelligent Systems
University of Würzburg
Technische Universität Wien

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

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 L10 magnets is not essential to achieve high-anisotropy values.

Original language	English
Article number	067207
Journal	Physical Review Letters
Volume	102
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.102.067207
State	Published - 13 Feb 2009
Externally published	Yes

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10.1103/PhysRevLett.102.067207

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title = "Magnetism of FePt surface alloys",

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 L10 magnets is not essential to achieve high-anisotropy values.",

author = "J. Honolka and Lee, \{T. Y.\} and K. Kuhnke and A. Enders and R. Skomski and S. Bornemann and S. Mankovsky and J. Min{\'a}r and J. Staunton and H. Ebert and M. Hessler and K. Fauth and G. Sch{\"u}tz and A. Buchsbaum and M. Schmid and P. Varga and K. Kern",

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day = "13",

doi = "10.1103/PhysRevLett.102.067207",

language = "English",

volume = "102",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Magnetism of FePt surface alloys

AU - Honolka, J.

AU - Lee, T. Y.

AU - Kuhnke, K.

AU - Enders, A.

AU - Skomski, R.

AU - Bornemann, S.

AU - Mankovsky, S.

AU - Minár, J.

AU - Staunton, J.

AU - Ebert, H.

AU - Hessler, M.

AU - Fauth, K.

AU - Schütz, G.

AU - Buchsbaum, A.

AU - Schmid, M.

AU - Varga, P.

AU - Kern, K.

PY - 2009/2/13

Y1 - 2009/2/13

N2 - 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 L10 magnets is not essential to achieve high-anisotropy values.

AB - 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 L10 magnets is not essential to achieve high-anisotropy values.

UR - https://www.scopus.com/pages/publications/61349129478

U2 - 10.1103/PhysRevLett.102.067207

DO - 10.1103/PhysRevLett.102.067207

M3 - Article

AN - SCOPUS:61349129478

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 067207

ER -

Magnetism of FePt surface alloys

Abstract

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