Ferromagnetism and spin-glass-like behavior of BiFeO3 nanoparticles

J. Zhong, J. J. Heremans, Dwight Viehland, G. T. Yee, S. Priya

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Abstract

BiFeO3 (BFO) nanoparticles were synthesized by the sol-gel method. X-ray diffraction and energy dispersive X-ray spectroscopy indicate no secondary phases are present, and the composition of the BiFeO3 nanoparticles was stoichiometric. Magnetic measurements show that the BiFeO 3 nanoparticles exhibit ferromagnetism with spin-glass-like behavior. The results were found to be related to size effects, which partially destroy the long-wavelength cycloid spin structure, and which induce ferromagnetism and spin-glass-like behavior due to diffusion of domain walls and pinning at the nanoparticle surface.

Original languageEnglish (US)
Pages (from-to)3-7
Number of pages5
JournalFerroelectrics
Volume400
Issue number1
DOIs
StatePublished - Dec 1 2010

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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