Direct Imaging of Nanostructured Magnetic Metalattices in 3D

ORAL

Abstract

Nano-engineered magnetic materials are of great interest for tuning magnetic interactions and because of their potential applications for next-generation spintronic devices. Nanoscale 3D magnetization textures such as inverse nickel metallatices can be fabricated by infiltrating close-packed silica nanospheres with nickel. Such structures can support many distinct magnetic phases and topologies, leading to a new class of nanostructured magnetic metamaterials. Despite recent success in theoretical predicting and fabricating these materials, 3D characterization of their structure and properties remains very challenging due to the lack of suitable microscopy tools. We developed a new 3D nanoscale magnetic imaging capability that combines x-ray magnetic circular dichroism, ptychographic imaging, and vector tomography. Using this new magnetic vector ptycho-tomography method on a synchrotron beamline, we imaged a nickel magnetic metallatice sample to unveil the underluing structure and spin texture.

*We gratefully acknowledge support for this work by STROBE: A National Science Foundation Science & Technology Center, under Grant No. DMR 1548924.

–

Presenters

  • Chen-Ting Liao

    • JILA, University of Colorado Boulder
    • Physics, JILA/University of Colorado Boulder
    • University of Colorado, Boulder
    • JILA, University of Colorado, Boulder

Authors

  • Chen-Ting Liao

    • JILA, University of Colorado Boulder
    • Physics, JILA/University of Colorado Boulder
    • University of Colorado, Boulder
    • JILA, University of Colorado, Boulder

  • Arjun Rana

    • University of California, Los Angeles

  • Minh Pham

    • University of California, Los Angeles

  • Emma Cating

    • University of Colorado, Boulder

  • Yuan Hung Lo

    • University of California, Los Angeles

  • Charles Bevis

    • JILA, University of Colorado Boulder
    • University of Colorado, Boulder
    • JILA, University of Colorado, Boulder

  • Robert M Karl

    • JILA, University of Colorado Boulder
    • JILA
    • University of Colorado, Boulder

  • Andrew Glaid

    • Pennsylvania State University

  • Nabila Nova

    • Pennsylvania State University

  • David A Shapiro

    • Lawrence Berkeley National Laboratory
    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Henry Kapteyn

    • JILA, University of Colorado Boulder
    • Department of Physics and JILA, University of Colorado, Boulder
    • STROBE and JILA, University of Colorado, Boulder
    • JILA and Department of Physics, University of Colorado, Boulder
    • STROBE and JILA, University of Colorado and NIST
    • Physics, JILA/University of Colorado Boulder
    • JILA
    • University of Colorado, Boulder
    • Physics and JILA, CU Boulder
    • JILA, University of Colorado, Boulder

  • Sadegh Yazdi

    • University of Colorado, Boulder

  • Stanley Osher

    • University of California, Los Angeles

  • John Badding

    • Pennsylvania State University

  • Jianwei Miao

    • University of California, Los Angeles

  • Margaret Murnane

    • JILA, University of Colorado Boulder
    • Department of Physics and JILA, University of Colorado, Boulder
    • STROBE and JILA, University of Colorado, Boulder
    • STROBE and JILA, University of Colorado and NIST
    • JILA
    • University of Colorado, Boulder
    • Physics and JILA, CU Boulder
    • University of Colorado
    • JILA, University of Colorado, Boulder