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MM: Fachverband Metall- und Materialphysik
MM 53: Liquid and Amorphous Metals
MM 53.1: Talk
Thursday, March 15, 2018, 10:15–10:30, TC 010
Cluster-assembled Metallic Glasses — •Cahit Benel1, Arne Fischer1, Aline Léon2, Anna Zimina2, Mohammed Reda Chellali1, Robert Kruk1, and Horst Hahn1,3 — 1Institute of Nanotechnology, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany — 2Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, 76344, Eggenstein-Leopoldshafen, Germany — 3Joint Research Laboratory Nanomaterials, Technische Universität Darmstadt, 64287, Darmstadt, Germany
Contrary to rapidly quenched metallic glasses, cluster-assembled metallic glasses (CAMGs) have precisely controlled building blocks in terms of their chemical composition and cluster size. Our state-of-the-art cluster ion beam deposition system allows us to deposit various cluster-based films under well-defined conditions. Furthermore, different compaction scenarios can be realized by varying the impact energies of the clusters. A series of amorphous FeSc samples were deposited with various impact energies. The magnetic properties of the samples can be tailored by the impact energy, which affects the ferromagnetic to paramagnetic transition temperature. No evidence of oxidation was found by the X-ray absorption fine structure spectroscopy analyses. The distinct difference in magnetism of chemically identical amorphous alloys is an evidence for a novel atomic structure existing in CAMGs and can provide a fundamental understanding of the structure-material property relation.