Room Temperature Ferromagnetism in Ce1−xFexO2− (x = 0.0, 0.05, 0.10, 0.15 and 0.20) Nanoparticles Synthesised by Combustion Method
Abstract:Nanocrystalline Ce1−xFexO2− 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−xFexO2− 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 (Tc) well above room temperature.
Document Type: Research Article
Publication date: 2010-04-01
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