Journal of physics. D, Applied physics, 2011-04, Vol.44 (15), p.155402
2011
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Details
- Autor(en) / Beteiligte
- Titel
- Swift heavy ion irradiation of Pt nanocrystals: II. Structural changes and H desorption
- Ist Teil von
- Journal of physics. D, Applied physics, 2011-04, Vol.44 (15), p.155402
- Ort / Verlag
- Bristol: IOP Publishing
- Erscheinungsjahr
- 2011
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- The structural properties and H desorption from embedded Pt nanocrystals (NCs) following irradiation with swift heavy ions were investigated as a function of energy and fluence. From x-ray absorption near-edge spectroscopy analysis, Pt–H bonding was identified in NCs annealed in a forming gas (95% N 2 + 5% H 2 ) ambient. The H content decreased upon irradiation and the desorption process was NC-size dependent such that larger NCs required a higher fluence to achieve a H-free state. Pt–H bonding and NC dissolution both perturbed the NC structural parameters (coordination number, bond-length and mean-square relative displacement) as determined with extended x-ray absorption fine structure measurements.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0022-3727eISSN: 1361-6463DOI: 10.1088/0022-3727/44/15/155402Titel-ID: cdi_osti_scitechconnect_1028513
- Format
- –
- Schlagworte
- ABSORPTION, ATOMIC AND MOLECULAR PHYSICS, BONDING, Condensed matter: structure, mechanical and thermal properties, Cross-disciplinary physics: materials science, rheology, DESORPTION, DISSOLUTION, Exact sciences and technology, FINE STRUCTURE, HEAVY IONS, Ion radiation effects, IRRADIATION, Materials science, Nanocrystalline materials, Nanoscale materials and structures: fabrication and characterization, Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals, Physical radiation effects, radiation damage, Physics, SPECTROSCOPY, Structure of solids and liquids, crystallography