Magnetostriction in Ni Nanowires: Coherent X-ray Diffraction and Density Functional Analysis

ORAL

Abstract

Three-dimensional magnetostriction is mapped in Ni nanowires with the aid of Bragg coherent X-ray diffraction (BCXDI). By inverting the measured BCXDI patterns using iterative phase retrieval algorithms giant magnetostrictive strain are observed due to a differential anisotropy of the lattice displacements along the [111] and (001) directions. Density functional calculations performed is consistent with the experimental observation. Our finding paves the way for the fabrication and development of novel magnetostrictive sensor elements.

*This work is supported by US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-SC0001805

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Authors

  • Erandi Wijerathna

    • Department of Physics, New Mexico State University

  • Jong Woo Kim

    • Department of Physics, UC San Diego

  • San Wen Chen

    • Department of Physics, UC San Diego

  • Ross Harder

    • Argonne National Lab
    • APS-Argonne National Lab

  • Sohini Manna

    • CMRR, UC San Diego
    • Univ of California - San Diego

  • Boris Kiefer

    • Department of Physics, New Mexico State University
    • New Mexico State University

  • Eric Fullerton

    • CMRR, UC San Diego

  • Edwin Fohtung

    • Department of Physics, New Mexico State University

  • Jose de la Venta

    • Department of Physics, Colorado State University
    • Univ of California - San Diego

  • Oleg G. Shpyrko

    • Department of Physics, UC San Diego
    • Univ of California - San Diego
    • Department of Physics and Center for Advanced Nanoscience, University of California San Diego