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Mössbauer spectroscopic investigations of nanophase iron oxides synthesized by thermal plasma route
- Source :
- Materials Characterization. 59:1215-1220
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Magnetic nanoparticles of iron oxide were synthesized by transferred arc plasma induced gas phase condensation method. Structural, morphological and magnetic studies of the as synthesized powder were carried out using X-ray diffraction, transmission electron microscopy and Mossbauer spectroscopy. These studies have revealed the simultaneous nucleation and condensation of different magnetic phases with a broad size distribution of the nanoparticles which is peaked at 30–50 nm and ranges from 10 nm to 80 nm. 57Fe Mossbauer spectra recorded at various temperatures (5 K–300 K) in presence of external magnetic field (at 5 K) have suggested the presence of different phases of iron oxide with sizable amounts of γ-Fe2O3 and α-Fe2O3 in addition to Fe3O4. The relative concentrations of these phases have been obtained by a self consistent spectral area analysis and were found to be 44:22:34 (%).
- Subjects :
- Materials science
Mössbauer effect
Mechanical Engineering
Nucleation
Iron oxide
Analytical chemistry
Nanoparticle
Condensed Matter Physics
chemistry.chemical_compound
chemistry
Mechanics of Materials
Transmission electron microscopy
Mössbauer spectroscopy
X-ray crystallography
Magnetic nanoparticles
General Materials Science
Subjects
Details
- ISSN :
- 10445803
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Materials Characterization
- Accession number :
- edsair.doi...........d29bbace086b1a2426a825acfcf15764