Determination of the melting temperature of palladium nanoparticles by X-ray absorption spectroscopy
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.
- Publication:
-
Physics of the Solid State
- Pub Date:
- February 2016
- DOI:
- 10.1134/S1063783416020335
- Bibcode:
- 2016PhSS...58..421V