AVS 50th International Symposium
    Magnetic Interfaces and Nanostructures Tuesday Sessions
       Session MI+NS-TuM

Paper MI+NS-TuM11
Magnetism in Transition-metal Alloy Films: Lineshape Analysis of Magnetic Linear Dichroism Angle-selective Photoemission Spectra

Tuesday, November 4, 2003, 11:40 am, Room 316

Session: Magnetic Imaging and Magnetic Spectroscopies
Presenter: R.F. Willis, The Pennsylvania State University
Authors: R.F. Willis, The Pennsylvania State University
N.A.R. Janke-Gilman, The Pennsylvania State University
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MLD photoemission measurements using synchrotron radiation to excite atomic core levels are reported for thin epitaxial films of transition-metal binary alloys.@footnote 1@ Careful background subtraction gives spectral lineshapes which are analyzed to give information on the magnitudes of the elemental magnetic moments and the degree of local magnetic order. The width of the dichroism spectrum is shown to relate to the magnitude of the moment, while the amplitude reflects the local magnetic anisotropy and ordering. Dichroism spectral widths and amplitudes are plotted as a function of alloy composition, reflecting changing magnetic behavior. The elemental spectral widths track the Slater-Pauling curve showing changing moments as a function of changing composition. Changing spectral amplitudes are compared with neutron scattering results which show changing magnetic anisotropy and magnetic order. @FootnoteText@ @footnote 1@ Measurements taken on Beamline 7.0.1 at the Advanced Light Source, Berkeley, CA.