Abstract
The anharmonicity parameters of the interatomic potential in ~4-nm palladium nanoparticles deposited on poly(tetra)fluoroethylene microgranules 0.2–0.5 μm in average size were studied by X-ray absorption spectroscopy from an analysis of temperature-dependent EXAFS Pd K edges. The parameters of the interatomic potential obtained were used to calculate melting temperature T melt = 1591 K and Debye temperature ΘD = 257 K of palladium nanoparticles; these temperatures are significantly lower than those in metallic palladium: 277 K and 1825 K, respectively.
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Original Russian Text © V.G. Vlasenko, S.S. Podsukhina, A.V. Kozinkin, Ya.V. Zubavichus, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 2, pp. 409–414.
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Vlasenko, V.G., Podsukhina, S.S., Kozinkin, A.V. et al. Determination of the melting temperature of palladium nanoparticles by X-ray absorption spectroscopy. Phys. Solid State 58, 421–426 (2016). https://doi.org/10.1134/S1063783416020335
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DOI: https://doi.org/10.1134/S1063783416020335