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Physics of Non Crystalline Solids
Proceedings of the 5th International Conference / Physique des Solides Non Cristallins
Comptes rendus du 5ème Congrès International
J. Phys. Colloques 43 (1982) C9-47-C9-50
DOI: 10.1051/jphyscol:1982909
LOCAL STRUCTURES ABOUT SOME TRANSITION ELEMENTS IN OXIDE GLASSES USING X-RAY ABSORPTION SPECTROSCOPY
J. Petiau1, 2 et G. Calas11 Laboratoire de Minéralogie-Cristallographie, Universités Paris VI et VII, 75230 Paris, France et L.U.R.E., 91405 Orsay, France
2 Ecole Normale Supérieure J.F., Montrouge, France
Résumé
La structure locale autour de certains métaux de transition (Cr-Fe-Co-Ni) présents dans des verres silicatés ou boratés est étudiée à partir des résultats de la spectrométrie d'absorption X. La complémentarité des informations qui peuvent être obtenues à partir des oscillations "EXAFS" (distance des atomes voisins) et de la structure du seuil (symétrie, état chimique) est mise en évidence.
Abstract
Absorption X-ray spectroscopy is used to study the local structure around transition elements (Cr-Fe-Co-Ni) in silicate and borate glasses. The complementarity of EXAFS, giving the neighbour distances, and of the near edge structure giving informations about symmetry and chemical state is emphasized.
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