Quantitative magnetic-moment mapping of a permanent-magnet material by X-ray magnetic circular dichroism nano-spectroscopy

Tetsuro Ueno; Ai Hashimoto; Yasuo Takeichi; Kanta Ono

doi:10.1063/1.4975043

AIP Advances (May 2017)

Quantitative magnetic-moment mapping of a permanent-magnet material by X-ray magnetic circular dichroism nano-spectroscopy

Tetsuro Ueno,
Ai Hashimoto,
Yasuo Takeichi,
Kanta Ono

Affiliations

Tetsuro Ueno: Elements Strategy Initiative Center for Magnetic Materials, Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan
Ai Hashimoto: Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
Yasuo Takeichi: Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
Kanta Ono: Elements Strategy Initiative Center for Magnetic Materials, Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan

DOI: https://doi.org/10.1063/1.4975043
Journal volume & issue: Vol. 7, no. 5
pp. 056804 – 056804-5

Abstract

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We demonstrate the quantitative mapping of magnetic moments in a permanent-magnet material by X-ray magnetic circular dichroism nano-spectroscopy. An SmCo5 specimen was prepared from the bulk material by using a micro-fabrication technique. Scanning transmission X-ray microscopy images were obtained around the Sm M4,5 absorption edges. By applying the magneto-optical sum rules to these images, we obtained quantitative maps of the orbital and spin magnetic moments as well as their ratio. We found that the magnitudes of the orbital and spin magnetic moments and their ratio do not depend on thickness of the specimen.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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