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Phys. Rev. B 58, 81–84 (1998)

[Issue 1 – 1 July 1998 ]

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Structure and local magnetic moments of epitaxial Fe(100)_100-xCo_x alloy films determined by photoelectron diffraction and magnetic linear dichroism

R. Schellenberg, E. Kisker, M. Faust, A. Fanelsa, and F. U. Hillebrecht

Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany

We discuss the relation between a photoelectron diffraction (PED) related core-level magnetic-field-induced intensity asymmetry ("magnetic dichroism") and the dependence of the structure and the local magnetic moments on Fe_100-xCo_x/Ag(001) epitaxial ultrathin alloy films. Data are obtained using a standard laboratory x-ray source. The 2p core levels of Fe and Co at any of the alloy compositions show PED patterns indicative of bcc environments of the emitter atoms. The magnetic dichroism of the Fe 2p_3/2 core level increases with increasing x, whereas it is virtually constant for the Co 2p_3/2 level. Both dependencies scale well with the calculated variation of the local magnetic moment with alloy composition.

©1998 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v58/p81
DOI: 10.1103/PhysRevB.58.81
PACS: 75.20.Hr, 75.70.Ak, 75.25.+z

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