Ferroelectric and magnetic properties for nano particles of multiferroic YbFe2O4

Hiroyuki Kobayashi, Kosuke Fujiwara, Naoya Kobayashi, Tomoyuki Karasudani, Masahiro Sakai, Naoshi Ikeda, Shigeo Mori, Osami Seri

Research output: Contribution to journalArticlepeer-review


Size effect and lattice strain effect for charge ordered structure and magnetic properties were investigated on the nano particles of geometrically spin and charge frustrated system YbFe2O4. The lattice strain of the nano particle was controlled with the ratio of Yb and Fe (2.00 ≤ Fe/Yb ≤ 2.04) in liquid synthesizing method. It was found that the lattice strain is not affected by the magnetic transition temperature, however the anomalous behavior at a lower magnetic transition (TLT) with an increment of the Fe / Yb ratio was detected. The development of charge ordering was two-dimensional and magnetic ordering goes down for all samples in spite of the variation of the local lattice strain. This is the first report of the coupling of charge and spin ordering to the size effect in this material. These results suggest that the discussion on the electric polarization induced from the charge ordering in this material need to care the long-range interaction like surface effect.

Original languageEnglish
Pages (from-to)77-84
Number of pages8
Issue number1
Publication statusPublished - May 19 2017


  • Multiferroic
  • YbFeO
  • electronic-ferroelectricity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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