Imaging antiferromagnetic antiphase domain boundaries using magnetic Bragg diffraction phase contrast

Min Gyu Kim, Hu Miao, Bin Gao, S.-W. Cheong, C. Mazzoli, A. Barbour, Wen Hu, S. B. Wilkins, I. K. Robinson, M. P. M. Dean and V. Kiryukhin ()
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Min Gyu Kim: Rutgers University
Hu Miao: Brookhaven National Laboratory
Bin Gao: Rutgers University
S.-W. Cheong: Rutgers University
C. Mazzoli: Brookhaven National Laboratory
A. Barbour: Brookhaven National Laboratory
Wen Hu: Brookhaven National Laboratory
S. B. Wilkins: Brookhaven National Laboratory
I. K. Robinson: Brookhaven National Laboratory
M. P. M. Dean: Brookhaven National Laboratory
V. Kiryukhin: Rutgers University

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: 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.

Date: 2018
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DOI: 10.1038/s41467-018-07350-3

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