Journal
SOLID STATE COMMUNICATIONS
Volume 123, Issue 3-4, Pages 179-184Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0038-1098(02)00232-6
Keywords
nanostructures; chemical synthesis; crystal structure and symmetry; X-ray scattering; inelastic scattering
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The structural evolution of a binary alloy with nominal composition Fe25Se75 prepared by ball milling was investigated as a function of milling time. The X-ray diffraction (XRD) patterns showed that for milling times up to 20 h, the FeSe2, phase is formed and excess selenium remains in the amorphous state. For milling times between 40 and 52 h, FeSe2. is partially transformed to beta-FeSe and/or Fe7Se8. The structural evolution of the mixture with milling time was followed using the XRD, differential scanning calorimetry and Raman spectroscopy techniques. (C) 2002 Elsevier Science Ltd. All rights reserved.
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