Room Temperature Ferromagnetism in Ce1−x Fe x O2−δ (x = 0.0, 0.05, 0.10, 0.15 and 0.20) Nanoparticles Synthesised by Combustion Method
Nanocrystalline Ce1−x
Fe
x
O2−δ
particles with different Fe concentrations (x = 0.0, 0.05, 0.10, 0.15, and 0.20) have been prepared by a gel-combustion method. X-ray diffraction data revealed the formation of
an impurity free Ce1−x
Fe
x
O2−δ
products up to x = 0.15. This observation is further confirmed from the detailed studies conducted on 10 at.% Fe doped CeO2 using High-Resolution Transmission Electron Microscopy
(HRTEM) imaging, Selected-Area Electron Diffraction (SAED) and Raman spectroscopy. DC magnetization studies as a function of field and temperature indicate that they are ferromagnetic with Curie temperature (T
c) well above room temperature.
Keywords: DC MAGNETIZATION; FE DOPED CEO2; RAMAN SPECTROSCOPY; ROOM TEMPERATURE FERROMAGNETISM; SELECTED-AREA ELECTRON DIFFRACTION; TRANSMISSION ELECTRON MICROSCOPY
Document Type: Research Article
Publication date: 01 April 2010
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