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

    Fingerprint

    Dielectric properties
    Ferroelectric materials
    dielectric properties
    Magnetic properties
    magnetic properties
    magnetization
    transmission electron microscopy
    microstructure
    Microstructure
    Magnetization
    Transmission electron microscopy
    magnetic measurement
    electron diffraction
    Magnetic variables measurement
    substitutes
    Electron diffraction
    Perovskite
    Substitution reactions
    diffraction
    X ray diffraction

    Keywords

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

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Microstructures associated with dielectric and magnetic properties in (1-x)BiFeO3-xBaTiO3 . / Horibe, Yoichi; Nakayama, Maki; Hosokoshi, Yuko; Asaka, Tom; Matsui, Yoshio; Asada, Toshihiro; Koyama, Yasumasa; Mori, Shigeo.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 9 B, 22.09.2005, p. 7148-7150.

    Research output: Contribution to journalArticle

    Horibe, Yoichi ; Nakayama, Maki ; Hosokoshi, Yuko ; Asaka, Tom ; Matsui, Yoshio ; Asada, Toshihiro ; Koyama, Yasumasa ; Mori, Shigeo. / Microstructures associated with dielectric and magnetic properties in (1-x)BiFeO3-xBaTiO3 In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2005 ; Vol. 44, No. 9 B. pp. 7148-7150.
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    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.",
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    AU - Horibe, Yoichi

    AU - Nakayama, Maki

    AU - Hosokoshi, Yuko

    AU - Asaka, Tom

    AU - Matsui, Yoshio

    AU - Asada, Toshihiro

    AU - Koyama, Yasumasa

    AU - Mori, Shigeo

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    KW - Ferromagnetism

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