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- Title
Hyperfine and Structural Properties of the Mechanically Alloyed (FeMn)<sub>30</sub>Cu<sub>70</sub> System.
- Authors
Restrepo, J.; Grenèche, J. M.
- Abstract
Nanostructured Fe15Mn15Cu70 alloys were prepared by high-energy ball milling. The alloying process spans grinding times from 15 minutes to 114 hours. The Mössbauer isomer shifts are analyzed at 77 K and 4.2 K as a function of the average lattice parameter determined from Rietveld analysis of the X-ray diffraction data. Evidence of two different iron sites at 77 K to account for the asymmetry of the Mössbauer spectra is discussed by correlating hyperfine and structural parameters. This leads to conclude the occurrence of a low-spin to high-spin partial transition of iron at a critical volume of around 50 Å3 at 77 K, supporting theoretical predictions.
- Subjects
MAGNETIC properties of metals; MAGNETIC alloys; ELECTROLYTIC iron; IRON; ALLOYS; AMALGAMATION
- Publication
Hyperfine Interactions, 2004, Vol 156/157, Issue 1-4, p69
- ISSN
0304-3843
- Publication type
Article
- DOI
10.1023/B:HYPE.0000043209.05765.f5