This title appears in the Scientific Report : 2014 

Quantitative characterization of nanoscale polycrystalline magnets with electron magnetic circular dichroism
Muto, Shunsuke (Corresponding author)
Rusz, Ján / Tatsumi, Kazuyoshi / Adam, Roman / Arai, Shigeo / Kocevski, Vancho / Oppeneer, Peter M. / Bürgler, Daniel E. / Schneider, Claus M.
Elektronische Eigenschaften; PGI-6
Nature Communications, 5 (2014) S. 3138
London Nature Publishing Group 2014
Journal Article
Spin-based and quantum information
Please use the identifier: in citations.
Please use the identifier: in citations.
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