This article is cited in 11 papers

Thermal properties

Determination of the melting temperature of palladium nanoparticles by X-ray absorption spectroscopy

V. G. Vlasenko^a, S. S. Podsukhina^a, A. V. Kozinkin^a, Ya. V. Zubavichus<sup>b

a</sup> Research Institute of Physics, Southern Federal University, Rostov-on-Don
^b National Research Centre "Kurchatov Institute", Moscow

Abstract: The anharmonicity parameters of the interatomic potential in $\sim$4-nm palladium nanoparticles deposited on poly(tetra)fluoroethylene microgranules 0.2–0.5 $\mu$m 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 $T_{\operatorname{melt}}$ = 1591K and Debye temperature $\Theta_D$ = 257 K of palladium nanoparticles; these temperatures are significantly lower than those in metallic palladium: 277 K and 1825 K, respectively.

Keywords: Palladium, Debye Temperature, Interatomic Potential, Coordination Shell, Palladium Nanoparticles.

Received: 14.07.2015

 English version: Physics of the Solid State, 2016, 58:2, 421–426

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