کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1524068 | 1511824 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Complex atomic dynamics in a deep-eutectic binary metallic melt Complex atomic dynamics in a deep-eutectic binary metallic melt](/preview/png/1524068.png)
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 β-relaxation process. The α-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.
► We studied diffusion dynamics in a deep eutectic Ce80Ni20 alloy melt.
► The dynamics were analyzed based on Mode-Coupling Theory.
► The critical temperature for the dynamic cross-over for this alloy melt is found to be at 564 ± 5 K
► The temperature dependence of diffusivity of Ni in Ce80Ni20 melt show an Arrhenius behavior.
► Diffusion dynamics in this alloy melt exhibit that of simple and fragile glass-forming melts.
Journal: Materials Chemistry and Physics - Volume 136, Issues 2–3, 15 October 2012, Pages 296–299