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Numerical simulation study of a low freezing point metallic alloy: Na–K–Cs

Abstract : A molecular dynamics study is performed of liquid Na0.139K0.435Cs0.426 alloy known to have the lowest reported freezing point (195.2 K). Using Fiolhais's pair potential, we study the temperature dependence of the atomic structure of this alloy from 100 to 1000 K. Na atoms appear to play an important role in the lowering of its melting temperature. The self-diffusion coefficients as well as the viscosity are also computed. Their temperature dependence does not show any unusual behaviour. However, as temperature is nearing the melting point, diffusion and viscosity reach uncommon values for this kind of materials.
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https://hal.univ-lorraine.fr/hal-03369985
Contributor : Jean-François Wax Connect in order to contact the contributor
Submitted on : Thursday, October 7, 2021 - 4:45:10 PM
Last modification on : Wednesday, October 13, 2021 - 9:23:52 AM

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Nadra Harchaoui, Jean-François Wax. Numerical simulation study of a low freezing point metallic alloy: Na–K–Cs. Journal of Physics: Condensed Matter, IOP Publishing, 2021, 33 (38), pp.385102. ⟨10.1088/1361-648X/ac1152⟩. ⟨hal-03369985⟩

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