期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 136, 期 2-3, 页码 296-299出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2012.07.011
关键词
Quasielastic neutron scattering; Metallic melts; Diffusion; Mode-Coupling Theory
资金
- priority program 1120 phase transition in multi-component metallic melts of the Deutsche Forchungegemeinschaft (DFG) [1832/3-2]
- DFG grant [GR 2714/2-1]
Quasielastic neutron scattering (QENS) was used to explore relaxation processes in a deep-eutectic Ce80Ni20 melt over a temperature range of 750 K, i.e., from 775 K to 1525 K. At low temperatures (T <= 890 K), the self-correlation function shows a fast beta-relaxation process. The alpha-relaxation process displays stretching of the self-correlation and obeys a time temperature superposition principle that extends over the entire measured temperature range. Even though the decay of the self-correlation functions of the Ce80Ni20 melt exhibit that of glass-forming melts, the temperature dependence of self-diffusivity displays an Arrhenius behavior, as observed for many simple, non-glass forming liquids. Published by Elsevier B.V.
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