Anharmonic Interatomic Potential Parameters Determined via EXAFS Cumulant Analysis for Pt–Fe Nanoparticles in a Polymer Matrix
- 作者: Podsukhina S.S.1, Kozinkin A.V.1, Vlasenko V.G.1
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隶属关系:
- Research Institute of Physics, Southern Federal University
- 期: 卷 13, 编号 5 (2019)
- 页面: 914-918
- 栏目: Article
- URL: https://journals.rcsi.science/1027-4510/article/view/196467
- DOI: https://doi.org/10.1134/S1027451019050318
- ID: 196467
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详细
Pt–Fe nanoparticles with a core–shell structure stabilized in polyethylene are studied via X-ray absorption spectroscopy. The temperature-dependent PtLIII-edge EXAFS (extended X-ray absorption fine structure) spectra of nanoparticle nuclei, consisting of platinum atoms, provide information on the interatomic-potential anharmonicity parameters along with the melting point Tmelt and the Debye temperature, which are found to be 1630 and 208 K, respectively. This is much lower than for bulk platinum, where the values are 2041.4 and 233 K, respectively.
作者简介
S. Podsukhina
Research Institute of Physics, Southern Federal University
编辑信件的主要联系方式.
Email: svetlanapodsukhina@gmail.com
俄罗斯联邦, Rostov-on-Don, 344090
A. Kozinkin
Research Institute of Physics, Southern Federal University
Email: v_vlasenko@rambler.ru
俄罗斯联邦, Rostov-on-Don, 344090
V. Vlasenko
Research Institute of Physics, Southern Federal University
编辑信件的主要联系方式.
Email: v_vlasenko@rambler.ru
俄罗斯联邦, Rostov-on-Don, 344090
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