Published September 23, 2002
| Version v1
Journal article
Cation migration and magnetic ordering in spinel CoFe2O4 powder: micro-Raman scattering study
Creators
- 1. Department of Physics, National University of Singapore (Singapore)
- 2. Department of Physics, National University of Singapore (SG)
- 3. Department of Materials Science, National University of Singapore (SG)
Description
Micro-Raman scattering was used to characterize spinel CoFe2O4 at high temperature up to 870 K and under an external magnetic field up to 6.0 kOe. It was found that the rapid increase in the linewidth of the Raman modes was related to the inter-site cation migration starting at ∼390 K. A red-shift of the Raman peaks induced by the magnetic ordering was observed upon applying a magnetic field at room temperature. Phase analysis of CoFe2O4 powder was also carried out by means of x-ray diffraction and micro-Raman spectroscopy in this work. (author). Letter-to-the-editor
Availability note (English)
Available online at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-6448X) http://www.iop.org/Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 14
- Journal Issue
- 37
- Journal Page Range
- p. L613-L618
- ISSN
- 0953-8984
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 33048434
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COBALT COMPOUNDS; FERRATES; MAGNETIC FIELDS; PHASE STUDIES; RAMAN SPECTRA; SCATTERING; SPINELS; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; IRON COMPOUNDS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; SCATTERING; SPECTRA; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 19 refs