Structural perturbations within nanocrystalline Cu probed by EXAFS
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Date
2005-01-31
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Institute of Physics
Abstract
Extended x-ray absorption fine structure (EXAFS) spectroscopy has emerged as an invaluable synchrotron radiation technique for determining the short-range atomic structure in a vast range of diverse materials. Cu nanocrystals (NCs) were synthesised by high-energy ion beam implantation and thermal annealing. We present results of EXAFS measurements determining the first nearest neighbour Cu environment and quantify significant concentration- and annealing-temperature-dependent structural perturbations as compared to a bulk Cu standard. In particular we observe and explain an enhanced structural disorder involving both a suppressed coordination number and bondlength contraction.
Description
Keywords
Beams, Bremsstrahlung, Electromagnetic radiation, Elements, Heat treatments, Ionizing radiations, Metals, Radiations, Sorption, Spectroscopy, Transition elements
Citation
Johannessen, B., Kluth, P., Glover, C. J., Foran, G. J., & Ridgway, M. C. (2005). Structural perturbations within nanocrystalline Cu probed by EXAFS. Paper presented to the 29th Condensed Matter and Materials Meeting, "Australian Institute of Physics Sixteenth Biennial Congress", Canberra, 2005, 31 January - 4 February 2005.