Microstructures associated with dielectric and magnetic properties in (1-x)BiFeO3-xBaTiO3

Yoichi Horibe, Maki Nakayama, Yuko Hosokoshi, Tom Asaka, Yoshio Matsui, Toshihiro Asada, Yasumasa Koyama, Shigeo Mori

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have investigated microstructures associated with the magnetic and dielectric properties of multiferroic mixed-perovskite compounds of the formula (1-x)BiFeO3-xBaTiO3 by transmission electron microscopy (TEM) combined with conventional dielectric and magnetic measurements. TEM observation revealed that there exist complicated ferroelectric (FE) domains 20-30 nm in size in the FE phase of BiFeO3. It was also found that, in an x = 0.25 compound, a weak spontaneous magnetization appears in the FE phase at 20 K. From the results of the X-ray and electron diffraction experiments, it is suggested that this weak spontaneous magnetization is closely associated with the decrease in the extent of rhombohedral distortion by a partial substitution of BaTiO3 for BiFeO3.

Original languageEnglish
Pages (from-to)7148-7150
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number9 B
DOIs
Publication statusPublished - 2005 Sep 22

Keywords

  • Ferroelectric domains
  • Ferroelectricity
  • Ferromagnetism
  • Mixed-perovskite compound
  • Multiferroics
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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