Structural investigation of magnetocapacitive SmMnO3

Hiroki Maeda, Yuki Ishiguro, Takashi Honda, Jong Suck Jung, Shinji Michimura, Toshiya Inami, Tsuyoshi Kimura, Yusuke Wakabayashi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Structural deformation of a magnetocapacitive material SmMnO3 was studied by X-ray diffraction measurement in a magnetic field. This antiferromagnetic material shows a jump in dielectric constant at 9 K only when a magnetic field of a few tesla is applied. In-field X-ray diffraction measurements clarified that there is no sudden change in structure that involves atomic displacement within the c-plane in Pbnm notation, while the antiferromagnetic phase transition at 60 K gives rise to a noticeable rotation of the MnO6 octahedra. This rotation occurs to maximize the energy gain through the exchange interaction.

Original languageEnglish
Pages (from-to)265-267
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume121
Issue number1411
DOIs
Publication statusPublished - 2013 Mar
Externally publishedYes

Keywords

  • Magnetic field
  • Magnetocapacitive effect
  • Perovskite oxide
  • Synchrotron radiation
  • X-ray diffraction

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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