Coupling between magnetism and dielectric properties in quantum paraelectric EuTiO3

Takuro Katsufuji, H. Takagi

Research output: Contribution to journalArticle

279 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number054415
Pages (from-to)544151-544154
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number5
Publication statusPublished - 2001 Aug 1
Externally publishedYes

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Magnetism
Dielectric properties
dielectric properties
Permittivity
permittivity
Magnetic fields
magnetic fields
europium titanium trioxide

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Coupling between magnetism and dielectric properties in quantum paraelectric EuTiO3 . / Katsufuji, Takuro; Takagi, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 64, No. 5, 054415, 01.08.2001, p. 544151-544154.

Research output: Contribution to journalArticle

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