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Temperature-dependent EXAFS analysis of embedded Pt nanocrystals

Giulian, Raquel; Araujo, Leandro; Kluth, Patrick; Sprouster, David; Schnohr, Claudia; Foran, Garry J; Ridgway, Mark C


The vibrational and thermal properties of embedded Pt nanocrystals (NCs) have been investigated with temperature-dependent extended x-ray absorption fine structure (EXAFS) spectroscopy. NCs of diameter 1.8-7.4nm produced by ion implantation in amorphous SiO2 were analysed over the temperature range 20-295K. An increase in Einstein temperature (∼194K) relative to that of a Pt standard (∼179K) was evident for the smallest NCs while those larger than ∼2.0nm exhibited values comparable to bulk...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Journal of Physics: Condensed Matter
DOI: 10.1088/0953-8984/21/15/155302


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