Chemical short range order in S-bearing metallic glass forming liquids
We intend to study the chemical short-range order in the sulfur containing glass forming liquid TiNiS and NiNbS as function of temperature and sulfur content. Taking advantage of the isotope sensitivity of the neutron diffraction technique, we propose experiments with "zero scattering" alloys and that varying scattering contrast of sulfur, in order to directly access chemical short-range order of the melt and the sulfur related partial structure factors. With this, the local sulfur environment in the melt and its relation with the more sluggish dynamics upon sulfur addition can be revealed. An in-depth analysis of the correlation between the local atomic structure and the atomic mobility of metallic liquids will allow a comprehensive understanding of the impact of sulfur on the glass forming ability, where vitrification is possibly facilitated by geometrical frustration.
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WILDEN Johanna; ADAM Bastian; DUCHASTENIER Valerie; GRUND Nicolai; Thomas C. Hansen; HOLLAND MORITZ Dirk; Lucas Philipp Kreuzer; MEYER Andreas; RUSCHEL Lucas; WAN MEENEN Isabelle and YANG Fan. (2021). Chemical short range order in S-bearing metallic glass forming liquids. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.6-05-1048
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