Imaging antiferromagnetic antiphase domain boundaries using magnetic Bragg diffraction phase contrast

ORAL

Abstract

Manipulating magnetic domains is essential for many technological applications. Recent breakthroughs in Antiferromagnetic Spintronics brought up novel concepts for electronic device development. Imaging antiferromagnetic domains is of key importance to this field. Unfortunately, some of the basic domain types, such as antiphase domains, cannot be imaged by conventional techniques. Herein, we present a new domain projection imaging technique based on the localization of domain boundaries by resonant magnetic diffraction of coherent x rays. Contrast arises from reduction of the scattered intensity at the domain boundaries due to destructive interference effects. We demonstrate this approach by imaging antiphase domains in a collinear antiferromagnet Fe2Mo3O8, and observe evidence of domain wall interaction with a structural defect. This technique does not involve any numerical algorithms. It is fast, sensitive, produces large-scale images in a single-exposure measurement, and is applicable to a variety of magnetic domain types.

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Presenters

  • Valery Kiryukhin

    Rutgers University, New Brunswick, RCEM, Department of Physics and Astronomy, Rutgers U.

Authors

  • Valery Kiryukhin

    Rutgers University, New Brunswick, RCEM, Department of Physics and Astronomy, Rutgers U.

  • Min Gyu Kim

    Rutgers University, New Brunswick

  • Bin Gao

    Rutgers University, New Brunswick, Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA, Department of Physics and Astronomy, Rice University

  • Sang-Wook Cheong

    Rutgers University, Department of Physics and Astronomy, Rutgers University, Rutgers University, New Brunswick, Rutgers Center for Emergent Materials and Department of Physics & Astronomy, Rutgers University, Center for Quantum Materials Synthesis and Department of Physics and Astronomy, Rutgers, the State University of New Jersey, Department of Physics, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA, Physics, Rutgers University, Physics and Astronomy, Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University, New Jersey, Rutgers University, Physics and Astronomy, and Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science, RCEM, Department of Physics and Astronomy, Rutgers U., Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials

  • Hu Miao

    BNL, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

  • Claudio Mazzoli

    Brookhaven National Laboratory, NSLS-II, Brookhaven National Laboratory, National Synchrotron Light Source II, Brookhaven National Laboratory, BNL, Brookhaven National Lab

  • Andi Barbour

    Brookhaven National Laboratory, NSLS-II, Brookhaven National Laboratory, BNL

  • Stuart B Wilkins

    Brookhaven National Laboratory, NSLS-II, Brookhaven National Laboratory, National Synchrotron Light Source II, Brookhaven National Laboratory, BNL

  • Ian Keith Robinson

    BNL, Brookhaven National Laboratory

  • Mark Dean

    Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Department of Condensed Matter Physics and Materials Science, Upton, New York 11973, USA, Brookhaven National Laboratory, BNL, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory