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Condensed Matter Seminars
| Condensed Matter
Thursday, April 12, 2001
Physics Building, Room 204
Note special time.
Note special room.
[Host: D. Louca]
James Madison University
"X-ray Diffraction and Spectroscopic Investigations of Nanophased Iron"
Nano-phased iron oxides often found in corrosion coatings have
properties that are scientifically interesting and industrially
important. Naturally weathered iron oxides have particle size in the
nanometer regime. Characterizing these oxides therefore require highly
specialized spectroscopic tool to accurately quantify the relative %
composition of the oxides usually present in a complex mixture. I will
be presenting the use of Mossbauer, Micro-Raman and x-ray diffraction
tools to accurately characterize each of the oxides in the mixture.
Spectroscopic investigations on the influence of chromium in forming
nano-phased goethite suggests that with increasing chromium
concentration superparamagnetic behavior is enhanced. Micro-structural
properties of mechanically alloyed Fe-Al alloys will be presented.
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