Probing the magnetic structure of Co$_{\mathrm{2}}$Fe$_{\mathrm{x}}$Mn$_{\mathrm{1-x}}$Si thin films by XAS/XMCD

ORAL

Abstract

We have analyzed the magnetic configuration for highly ordered epitaxial thin films across the Co$_{\mathrm{2}}$Fe$_{\mathrm{x}}$Mn$_{\mathrm{1-x}}$Si compositional series (x $=$ 0, 0.3, 0.7, 1) by x-ray circular magnetic dichroism (XMCD) and x-ray absorption spectroscopy (XAS). These measurements give the element-specific electronic structure of each film, as well as the spin and orbital moments. We will present our observations at the Co, Mn, and Fe L-edges to explain the significant changes in intermediate stoichiometries as compared with the parent Co$_{\mathrm{2}}$MnSi and Co$_{\mathrm{2}}$FeSi systems.

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Authors

  • Adam Hauser

    • Department of Physics, The University of Alabama
    • The University of Alabama
    • University of Alabama

  • Joshua Phillips

    • Department of Physics, The University of Alabama
    • University of Alabama

  • Mihir Pendharkar

    • Materials Department, University of California-Santa Barbara, Santa Barbara, California 93106, USA

  • Sahill J. Patel

    • Materials Department, University of California-Santa Barbara, Santa Barbara, California 93106, USA

  • Chris Palmstrom

    • California NanoSystems Institute, University of California Santa Barbara
    • Materials Department, Department of Electrical and Computer Engineering, University of California at Santa Barbara
    • Materials Department, University of California-Santa Barbara, Santa Barbara, California 93106, USA
    • Electrical and Computer Engineering Department & Materials Department, University of California Santa Barbara
    • Materials Department and Department of Electrical and Computer Engineering, Univ of California, Santa Barbara
    • Materials Department, University of California, Santa Barbara