2024-03-29T07:07:27Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00018739
2023-01-16T04:07:36Z
320:321:322
Quantitative characterization of nanoscale polycrystalline magnets with electron magnetic circular dichroism
Muto, Shunsuke
54633
Rusz, Ján
54634
Tatsumi, Kazuyoshi
54635
Adam, Roman
54636
Arai, Shigeo
54637
Kocevski, Vancho
54638
Oppeneer, Peter M.
54639
Bürgler, Daniel E.
54640
Schneider, Claus M.
54641
Physical sciences
Applied physics
Materials science
Electron magnetic circular dichroism (EMCD) allows the quantitative, element-selective determination of spin and orbital magnetic moments, similar to its well-established X-ray counterpart, X-ray magnetic circular dichroism (XMCD). As an advantage over XMCD, EMCD measurements are made using transmission electron microscopes, which are routinely operated at sub-nanometre resolution, thereby potentially allowing nanometre magnetic characterization. However, because of the low intensity of the EMCD signal, it has not yet been possible to obtain quantitative information from EMCD signals at the nanoscale. Here we demonstrate a new approach to EMCD measurements that considerably enhances the outreach of the technique. The statistical analysis introduced here yields robust quantitative EMCD signals. Moreover, we demonstrate that quantitative magnetic information can be routinely obtained using electron beams of only a few nanometres in diameter without imposing any restriction regarding the crystalline order of the specimen.
journal article
nature publishing group
2014-01
application/pdf
Nature Communications
5
3138
3138
http://dx.doi.org/10.1038/ncomms4138
http://hdl.handle.net/2237/20835
2041-1723
https://nagoya.repo.nii.ac.jp/record/18739/files/NCOMM.pdf
eng
https://doi.org/10.1038/ncomms4138