Valence ordering in the intermediate-valence magnet YbPd

Ryo Takahashi, Takashi Honda, Atsushi Miyake, Tomoko Kagayama, Katsuya Shimizu, Takao Ebihara, Tsuyoshi Kimura, Yusuke Wakabayashi

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11 Citations (Scopus)

Abstract

An x-ray diffraction study reveals the valence-ordering structure in an intermediate-valence magnet YbPd with a CsCl structure. The valence of the Yb ions forms an incommensurate structure, characterized by the wave vector (±0.07 ±0.07 1/2) below 130 K. At 105 K, the incommensurate structure turns into a commensurate structure, characterized by the wave vector (0 0 1/2). Based on the resonant x-ray diffraction spectra of the superlattice reflections, the valences of the Yb ions below 105 K are found to be 3+ and 2.6+. The origin of the long-wavelength modulation is discussed with the aid of an Ising model having next-nearest-neighbor interaction.

Original languageEnglish
Article number054109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number5
DOIs
Publication statusPublished - 2013 Aug 19
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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