Title
Local environments of Fe and Co in (Fe<inf>0.5</inf>Co<inf>0.5</inf>)<inf>75</inf>Si<inf>15</inf>B<inf>10</inf> mechanically alloyed
Date Issued
05 May 2009
Access level
metadata only access
Resource Type
research article
Author(s)
PEÑA RODRIGUEZ, VICTOR ANTONIO
QUISPE MARCATOMA, JUSTINIANO
ROJAS AYALA, CHACHI
Baggio-Saitovitch E.
Passamani E.
Abstract
During the milling process, local environments of Fe and Co in mechanically alloyed (Fe0.5Co0.5)75Si15B10 powders were systematically investigated using extended X-ray absorption fine structure (EXAFS) and 57Fe Mössbauer spectroscopy. While no substantial changes on the Fe-short-range order are observed in the Fe-edge EXAFS as a function of milling time, the Co-edge EXAFS data show significant modification on the Co-short-range order due to the presence of Si for the (Fe0.5Co0.5)75Si15B10 alloys milled longer than 10 h. Mössbauer data suggest that the milled end-sample (19 h sample) consists of nanograins of ordered BCC-FeCo (13%) embedded in FeCoSiB amorphous matrix phase. © 2008 Elsevier B.V. All rights reserved.
Start page
29
End page
34
Volume
475
Issue
February 1
Language
English
OCDE Knowledge area
Ingeniería de materiales
Subjects
Scopus EID
2-s2.0-63649140868
Source
Journal of Alloys and Compounds
ISSN of the container
09258388
Sponsor(s)
This work has been supported by the Brazilian Synchrotron Light Laboratory (LNLS) under proposal D04B-XAS1-1899. The authors would like to acknowledge the financial support provided by CSI-UNMSM under Projects No. 021301021–031301011, FAPERJ-Brazil (Cientista do Nosso Estado), FINEP, FAPES and Latin American Center of Physics.
Sources of information:
Directorio de Producción Científica
Scopus