Home > Publications database > Short-range order and atomic diffusion in liquid Ge and $Si_{20}Ge_{80}$ investigated by neutron scattering and x-ray diffraction > print

001     473957
005     20250716150734.0
024 7 _ |a 10.1103/PhysRevB.104.134108
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100 1 _ |a Weis, H.
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245 _ _ |a Short-range order and atomic diffusion in liquid Ge and $Si_{20}Ge_{80}$ investigated by neutron scattering and x-ray diffraction
260 _ _ |a Woodbury, NY
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520 _ _ |a We studied structure and dynamics in liquid Ge and Si$_{20}$Ge$_{80}$. Quasielastic neutron scattering (QNS) was employed to accurately determine the Ge self-diffusion coefficient. Static structure factors were measured using neutron and x-ray diffraction. Containerless processing via electromagnetic levitation (EML) enabled to obtain structure factors over a broad temperature range from the metastable regime of the undercooled melt to several hundred Kelvin above the melting point. Moreover, isotopic substitution and combination with x-ray diffraction allowed to determine the partial structure factors SNN(q), SNC(q), SGeGe(q), and SGeSi(q) for liquid $_{20}$Ge$_{80}$. The topological structures of liquid Ge and Si$_{20}$Ge$_{80}$ are very similar. In addition, the Ge self-diffusion coefficients in liquid Ge and Si$_{20}$Ge$_{80}$ are equal within error limits.
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700 1 _ |a Holland-Moritz, Dirk
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700 1 _ |a Kargl, F.
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700 1 _ |a Yang, F.
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700 1 _ |a Unruh, T.
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700 1 _ |a Hansen, T. C.
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700 1 _ |a Bednarcik, Jozef
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700 1 _ |a Meyer, A.
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773 _ _ |a 10.1103/PhysRevB.104.134108
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