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Room Temperature Ferromagnetism in Fe-Doped CeO2 Nanoparticles

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RT ferromagnetism was observed in nanoparticles of Fe-doped CeO2 (i.e., Ce0.97Fe0.03O2) synthesized by a sol–gel method. The undoped and Fe-doped CeO2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce0.97Fe0.03O2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce0.97Fe0.03O2 sample is paramagnetic whereas 773 and 873 K-calcined Ce0.97Fe0.03O2 samples are ferromagnetism having the magnetizations of 4.65 × 10−3 emu/g and 6.20 × 10−3 emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO2 system and is not a result of any secondary magnetic phase or cluster formation.


Document Type: Research Article


Publication date: 2009-11-01

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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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