J. Phys. IV France 7 (1997) C2-979-C2-981
Local Structure and Size Effects in Nanophase PalladiumS. De Panfilis1, F. d'Acapito2, 3, V. Haas4, H. Konrad4, J. Weissmüller4 and F. Boscherini1
1 INFN, Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati, Rome, Italy
2 CNR, piazzale A. Moro, 00185 Roma, Italy
3 GILDA CRG, ESRF, BP. 220, 38043 Grenoble, France.
4 Universität des Saarlandes, 66121 Saarbrücken, Germany
The connection between local structure and the grain size distribution in nanophase palladium is studied by XAFS and x-ray diffraction (XRD). We show that there is a reduced average coordination number in all samples ; this reduction is compatible with a size effect, contradicting previous XAFS measurements. Both a first shell analysis and a full analysis up to the 8th coordination shell, including multiple-scattering, are reported.
© EDP Sciences 1997