Determination of the melting temperature of palladium nanoparticles by X-ray absorption spectroscopy
| Autor: | Ya. V. Zubavichus, A. V. Kozinkin, S. S. Podsukhina, Valery G. Vlasenko |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
X-ray absorption spectroscopy Materials science Extended X-ray absorption fine structure Absorption spectroscopy Anharmonicity Analytical chemistry chemistry.chemical_element Interatomic potential Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Metal symbols.namesake chemistry visual_art 0103 physical sciences symbols visual_art.visual_art_medium 010306 general physics Debye model Palladium |
| Zdroj: | Physics of the Solid State. 58:421-426 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | 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 Tmelt = 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. |
| Databáze: | OpenAIRE |
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