A multiple-scattering (MS) EXAFS study of nanocrystalline iron prepared by high-energy ball milling is presented. The use of MS signals has allowed an accurate investigation of the local structure. The dramatic decrease of the coordination numbers, followed as a function of the milling time, is assigned to the presence of a large number of ill-coordinated atoms. The stronger reduction of the three-atom multiple-scattering signal confirms this interpretation. An ''in-situ'' annealing (up to about 1100 degrees C) is shown to increase the local coordination.

Probing local structure by multiple-scattering EXAFS data-analysis: Application to nanocrystalline iron

DI CICCO, Andrea
1995-01-01

Abstract

A multiple-scattering (MS) EXAFS study of nanocrystalline iron prepared by high-energy ball milling is presented. The use of MS signals has allowed an accurate investigation of the local structure. The dramatic decrease of the coordination numbers, followed as a function of the milling time, is assigned to the presence of a large number of ill-coordinated atoms. The stronger reduction of the three-atom multiple-scattering signal confirms this interpretation. An ''in-situ'' annealing (up to about 1100 degrees C) is shown to increase the local coordination.
1995
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11581/237145
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 1
social impact