Origin of magnetostriction in Fe-Ga

Chaitanya Mudivarthi, Mark Laver, James Cullen, Alison B. Flatau, Manfred Wuttig

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    Abstract

    This paper investigates the origin of large magnetostriction in Fe-Ga alloys using small-angle neutron scattering (SANS) and Kerr microscopy. The SANS data for a single-crystal, electron irradiated, and quenched Fe81Ga19 sample under externally applied magnetic and elastic fields revealed the existence of magnetostrictive nanoclusters spaced at similar to 15 nm apart that have a different magnetization than the A2 matrix. Combining the SANS results and the magnetization orientation obtained from the magnetic domain images using a Kerr microscope, it appears that the nanoclusters contribute significantly to the macroscopic magnetostriction.
    Original languageEnglish
    JournalJournal of Applied Physics
    Volume107
    Issue number9
    Pages (from-to)09A957
    ISSN0021-8979
    DOIs
    Publication statusPublished - 2010
    EventJoint MMM-Intermag Conference - Washington, DC
    Duration: 1 Jan 2010 → …
    Conference number: 11th

    Conference

    ConferenceJoint MMM-Intermag Conference
    Number11th
    CityWashington, DC
    Period01/01/2010 → …

    Bibliographical note

    Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    Keywords

    • Materials and energy storage
    • Superconducting materials

    Cite this

    Mudivarthi, C., Laver, M., Cullen, J., Flatau, A. B., & Wuttig, M. (2010). Origin of magnetostriction in Fe-Ga. Journal of Applied Physics, 107(9), 09A957. https://doi.org/10.1063/1.3359814