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Rhombohedral-to-orthorhombic transition and multiferroic properties of Dy-substituted BiFeO3

  • V. A. Khomchenko
  • , D. V. Karpinsky
  • , A. L. Kholkin
  • , N. A. Sobolev
  • , G. N. Kakazei
  • , J. P. Araujo
  • , I. O. Troyanchuk
  • , B. F.O. Costa
  • , J. A. Paixão
  • University of Coimbra
  • University of Aveiro
  • University of Porto
  • NASU - Institute of Magnetism of NAS and MES of Ukraine
  • Belarus Academy of Sciences

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)

Abstract

Investigation of crystal structure, ferroelectric, and magnetic properties of polycrystalline Bi1-xDyxFeO3 (0.1≤x≤0.2) samples was carried out. X-ray diffraction study revealed composition-driven rhombohedral-to-orthorhombic R3c→Pnma phase transition at x∼0.15. Both structural phases were found to coexist in a broad concentration range. Piezoresponse force microscopy found suppression of the parent ferroelectric phase upon dysprosium substitution. Magnetometric study confirmed that the A -site doping induces appearance of a weak ferromagnetic behavior. Both the ferroelectric and magnetic properties were shown to correlate with a structural evolution.

Original languageEnglish
Article number074109
JournalJournal of Applied Physics
Volume108
Issue number7
DOIs
Publication statusPublished - 1 Oct 2010
Externally publishedYes

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