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Room Temperature Ferromagnetism in Ce1−xFexO2− (x = 0.0, 0.05, 0.10, 0.15 and 0.20) Nanoparticles Synthesised by Combustion Method

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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.

Keywords: DC MAGNETIZATION; FE DOPED CEO2; RAMAN SPECTROSCOPY; ROOM TEMPERATURE FERROMAGNETISM; SELECTED-AREA ELECTRON DIFFRACTION; TRANSMISSION ELECTRON MICROSCOPY

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2010.1925

Publication date: 2010-04-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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