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Analysis of atomic ordering of the ferromagnetic Co.sub.2./sub.Fe(Ga.sub.0.5./sub.Ge.sub.0.5./sub.) Heusler compound using spectroscopic ellipsometry
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SYSNO ASEP 0566495 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Analysis of atomic ordering of the ferromagnetic Co2Fe(Ga0.5Ge0.5) Heusler compound using spectroscopic ellipsometry Author(s) Král, D. (CZ)
Cejpek, P. (CZ)
Kudrnovský, Josef (FZU-D) RID, ORCID
Drchal, Václav (FZU-D) RID, ORCID
Beran, L. (CZ)
Vilanova, E. (DE)
Jakob, G. (DE)
Zázvorka, J. (CZ)
Antoš, R. (CZ)
Hamrle, J. (CZ)
Veis, M. (CZ)Number of authors 11 Article number 144102 Source Title Physical Review B. - : American Physical Society - ISSN 2469-9950
Roč. 106, č. 14 (2022)Number of pages 7 s. Language eng - English Country US - United States Keywords Heusler compound Co2Fe(Ga0.5Ge0.5) ; spectroscopic ellipsometry ; ab initio calculation ; structure determination Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GA19-09882S GA ČR - Czech Science Foundation (CSF) GA18-07172S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000874100700001 EID SCOPUS 85140797658 DOI 10.1103/PhysRevB.106.144102 Annotation Atomic ordering of ferromagnetic alloys, such as Heusler compounds, vastly influences their magnetic properties and overall usability. However, in some cases x-ray diffraction cannot unambiguously determine the correct atomic structure, which hampers further research. In this paper, we analyze the atomic ordering using spectroscopic ellipsometry—a simple tabletop method that researchers can use in situ during sample deposition. The Co2Fe(Ga0.5Ge0.5) Heusler compound was chosen for the analysis, as the atomic ordering greatly influences its spin-polarizing capabilities. The ellispometric results are confronted with x-ray diffraction and with the help of ab initio calculations the qualitative changes in the optical response are linked to the changes in atomic ordering. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1103/PhysRevB.106.144102
Number of the records: 1