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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.

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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