Room temperature ferromagnetism in Fe-doped CeO 2 nanoparticles

Santi Maensiri, Sumalin Phokha, Paveena Laokul, Supapan Seraphin

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

RT ferromagnetism was observed in nanoparticles of Fe-doped CeO 2 (i.e., Ce 0.97Fe 0.03O 2) synthesized by a sol-gel method. The undoped and Fe-doped CeO 2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce 0.97Fe 0.03O 2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce 0.97Fe 0.03O 2 sample is paramagnetic whereas 773 and 873 K-calcined Ce 0.97Fe 0.03O 2 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 CeO 2 system and is not a result of any secondary magnetic phase or cluster formation.

Original languageEnglish (US)
Pages (from-to)6415-6420
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number11
DOIs
StatePublished - Nov 1 2009

Keywords

  • Cerium oxide
  • Dilute magnetic semiconductor
  • Ferromagnetism
  • Magnetic properties
  • Nanoparticles

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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