Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 14, Issue 37, Pages L613-L618Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/14/37/101
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Micro-Raman scattering was used to characterize at high spinel CoFe2O4 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 similar to390 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.
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