Direct observation of low-temperature superstructure in spin- and charge-frustrated ferrite YFe2 O4-δ

Y. Horibe, N. Ikeda, K. Yoshii, S. Mori

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The low-temperature superstructure of YFe2 O4-δ was carefully investigated by transmission electron microscopy. We found that the unique superstructure at about 100 K is characterized by 1̄ /142/71/14 -type superlattice reflection spots, suggesting the presence of charge-reordering process. The low-temperature high-resolution images clearly show superlattice modulations in Y-O layers as well as Fe-O layers. The modification of intrabilayer charge interactions due to lattice distortions in Y-O layers is discussed to play a crucial role in the stabilization of long-periodic superstructures at low temperatures.

Original languageEnglish
Article number184119
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - Nov 29 2010


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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