| Numéro |
J. Phys. Colloques
Volume 47, Numéro C8, Décembre 1986
EXAFS and Near Edge Structure IV
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|---|---|---|
| Page(s) | C8-1009 - C8-1014 | |
| DOI | https://doi.org/10.1051/jphyscol:19868194 | |
EXAFS and Near Edge Structure IV
J. Phys. Colloques 47 (1986) C8-1009-C8-1014
DOI: 10.1051/jphyscol:19868194
INFN, Laboratori Nazionali di Frascati, cp. 13, I-00044 Frascati, Italy
J. Phys. Colloques 47 (1986) C8-1009-C8-1014
DOI: 10.1051/jphyscol:19868194
DYNAMICAL PROPERTIES OF Au METAL AND CLUSTERS FROM EXAFS
A. BALERNA et S. MOBILIOINFN, Laboratori Nazionali di Frascati, cp. 13, I-00044 Frascati, Italy
Abstract
The L3 edge of Au bulk has been studied by X-ray absorption spectroscopy in the temperature range 16-300 K. An effective Debye temperature of 165 K has been evaluated from the spectra, in good agreement with heat capacity measurements. The behaviors of the Exafs Debye Waller factors have been calculated also for Au clusters by using a free bounded sphere density of state. An excellent agreement has been found with experimental data previously reported. This confirm that the dynamical properties of Au clusters are well described by a liquid drop model in agreement with heat capacity measurements.