Academic Journal
Irradiation-induced enhancement of Fe and Al magnetic polarizations in Fe60Al40 films
| Title: | Irradiation-induced enhancement of Fe and Al magnetic polarizations in Fe60Al40 films |
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| Authors: | A Smekhova, Th Szyjka, E La Torre, K Ollefs, B Eggert, B Cöster, F Wilhelm, R Bali, J Lindner, A Rogalev, D Többens, E Weschke, C Luo, K Chen, F Radu, C Schmitz-Antoniak, H Wende |
| Source: | New Journal of Physics, Vol 26, Iss 2, p 023036 (2024) |
| Publisher Information: | IOP Publishing, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Science LCC:Physics |
| Subject Terms: | chemical disorder, ion-irradiation, XANES, XMCD, plasma treatment, Science, Physics, QC1-999 |
| More Details: | The rise of Fe magnetic moment, changes in Al electronic structure and a variation of Al magnetic polarization in thin films of transition metal aluminide Fe _60 Al _40 have been probed through the order-disorder phase transition by soft x-ray absorption spectroscopy and x-ray resonant magnetic reflectivity in the extreme ultraviolet regime. In a course of the transition induced by 20 keV Ne ^+ irradiation with low fluences (∼10 ^14 ions cm ^−2 ), x-ray magnetic circular dichroism spectra taken at the Fe L $_{2,3}$ absorption edges at room and low temperatures revealed a pronounced increase of Fe $3\textit{d}$ states spin-polarization. X-ray resonant magnetic reflectivity applied to the Al L $_{2,3}$ and Fe M $_{2,3}$ edges allowed to detect the magnetic polarization of Al atoms in the films. The changes in Al electronic structure have been seen by alteration of Al K edge x-ray absorption near edge structure. A difference in anisotropy fields for films before and after irradiation has been observed by element-specific hysteresis loops recorded at low temperatures in absorption and reflection geometries at the Fe L $_{2,3}$ and M $_{2,3}$ edges, respectively. An attempt to reduce the top oxide layer by an inductively coupled hydrogen plasma has shown a possibility to recover the chemically ordered phase. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1367-2630 |
| Relation: | https://doaj.org/toc/1367-2630 |
| DOI: | 10.1088/1367-2630/ad1497 |
| Access URL: | https://doaj.org/article/961ab477130d4cc189b2c8b9806431ad |
| Accession Number: | edsdoj.961ab477130d4cc189b2c8b9806431ad |
| Database: | Directory of Open Access Journals |
| ISSN: | 13672630 |
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| DOI: | 10.1088/1367-2630/ad1497 |
| Published in: | New Journal of Physics |
| Language: | English |