Dielectric and magnetic anomalies and spin frustration in hexagonal (formula presented) (formula presented) Yb, and Lu)

N. Yamamoto, H. Takagi, Takuro Katsufuji, M. Masaki, S. Mori, Y. Moritomo

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Single crystals of hexagonal (formula presented) (formula presented) Yb, and Lu), where Mn ions form the triangular lattice, were investigated, focusing on their dielectric/magnetic anomalies as well as geometrical spin frustration. It is found that the ratio of a Weiss temperature to (formula presented) is (formula presented) in (formula presented) indicating the dominant role of strong geometrical frustration. The effect of geometrical frustration also appears in specific heat, which shows a presence of a substantial amount of residual magnetic contribution below (formula presented) indicating that a part of the spins are still fluctuating at (formula presented) It is also found that the dielectric anomaly at (formula presented) is strongly anisotropic, suggesting a unique correlation between magnetism and dielectric properties in these compounds.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number10
Publication statusPublished - 2001 Jan 1
Externally publishedYes


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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