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Controlling the structure and magnetic properties of cluster-assembled metallic glasses

Benel, Cahit 1; Fischer, Arne 1; Zimina, Anna 2,3; Steininger, Ralph 4; Kruk, Robert 1; Hahn, Horst 1; Léon, Aline 4
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)
3 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
4 Institut für Photonenforschung und Synchrotronstrahlung (IPS), Karlsruher Institut für Technologie (KIT)


The potential to control the structure of amorphous materials and establish correlations with their properties would constitute an extraordinary step in formulating new pathways to design and tailor amorphous structures, which correspondingly would exhibit novel properties. Towards achieving this goal, a bottom-up approach is proposed here. In the present study, cluster-assembled Fe80Sc20 metallic glasses are used as the model systems to illustrate this potentially groundbreaking approach. Accordingly, Fe80Sc20 amorphous films are nanofabricated under well-defined conditions with precise control over cluster size and impact energy. Their local atomic structures are characterized by X-ray absorption spectroscopy around both constituent metals, i.e., Fe and Sc. The capability of controlling the local structure by controlling the deposition energy (i.e., the clusters’ impact energy) has resulted in substantial changes in the magnetic Curie temperature. In fact, the Curie temperature changes by as much as 60 K when the deposition energy is increased from 50 eV per cluster (the lowest deposition energy) to 500 eV per cluster (the highest deposition energy). ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000090116/pub
Veröffentlicht am 16.05.2019
Preprint §
DOI: 10.5445/IR/1000090116
Veröffentlicht am 25.01.2019
DOI: 10.1039/C8MH01013G
Zitationen: 9
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Nanotechnologie (INT)
Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2051-6347, 2051-6355
KITopen-ID: 1000090116
HGF-Programm 43.22.02 (POF III, LK 01) Nanocatalysis
Weitere HGF-Programme 56.98.01 (POF III, LK 01) Betrieb in MML
Erschienen in Materials Horizons
Verlag Royal Society of Chemistry (RSC)
Band 6
Heft 4
Seiten 727-732
Nachgewiesen in Scopus
Web of Science
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