NDLI: Mössbauer spectroscopy study of mechanically alloyed Fe2O3

Content Provider	Springer Nature Link
Author	Mulaba Bafubiandi, Antoine F.
Copyright Year	2006
Abstract	Mössbauer spectroscopy revealed that a central hyperfine interaction doublet and an additional sextet characterized the appearance of new phases in the mechanically alloyed Fe2O3–Al and Fe2O3–Co systems. In the Fe2O3–Al system, the intensity of the central super paramagnetic doublet which represents small particles of iron, increased with increasing milling time from 5 to 30 h of mechanical alloying. The magnetic sextet characterizing hematite vanished in the room temperature Mössbauer spectra of samples produced after 25 h of mechanically alloying the 50% Fe2O3 and 50% Al system. In general XRD peak broadening was observed as a result of extensive material structural distortion and formation of small particles. Fe, Al2O3 and mixed iron–aluminium oxide phases were identified in the XRD patterns with a small persistence of the iron oxide up to 20 h of mechanically alloying the 1:1 system Al–Fe2O3. In the 50% Co–50% Fe2O3 system, a 55% abundant new phase CoFe2O4 was observed, from the Mössbauer spectra of the system. The presence of this new phase was confirmed by the XRD analysis. The high energy ball milling of WC–Fe2O3 revealed a more effective grinding compared to hematite alone. The hematite particles were reduced to nanosized particles.
Starting Page	1017
Ending Page	1022
Page Count	6
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	168
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-12-14
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Mössbauer spectroscopy hematite ore cobalt WC aluminum mechanical alloying Surfaces and Interfaces, Thin Films Condensed Matter Atoms, Molecules, Clusters and Plasmas Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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