Coupling between magnetism and dielectric properties in quantum paraelectric EuTiO3

T. Katsufuji*, H. Takagi

*この研究の対応する著者

研究成果: Article査読

316 被引用数 (Scopus)

抄録

The dielectric constant of quantum paraelectric EuTiO3, which contains Eu2+ with S=7/2 spin and Ti4+, has been measured under a magnetic field. The dielectric constant shows a critical decrease at the antiferromagnetic ordering of the Eu spins at 5.5 K, as well as a substantial change under a magnetic field (by ∼7% with 1.5 T), indicating a strong coupling between the Eu spins and dielectric properties. We show that the variation of the dielectric constant is dominated by the pair correlation of the nearest-neighbor Eu spins, likely via the variation of the soft-phonon-mode frequency.

本文言語English
論文番号054415
ページ(範囲)544151-544154
ページ数4
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
64
5
出版ステータスPublished - 2001 8 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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