Charge ordering in Sm4Bi3 under pressure

H. Kobayashi, S. Yamaoka, S. Ikeda, N. Hirao, Y. Ohishi, Y. Yoda, A. Ochiai

Research output: Contribution to journalConference article

Abstract

We have investigated the charge ordering in Sm4Bi3 under pressure by magnetic susceptibility and x-ray diffraction measurements. We observed discontinuous anomalies in the temperature dependences of magnetic susceptibility and volume at the charge ordering transition owing to the first-order transition and then the estimated charge ordering transition temperature decreases linearly with increasing pressure. The volume ratio between the SmBi6 octahedra at two nonequivalent Sm sites indicates the partial charge ordering of Sm ions in the charge ordered phase. The evidence of the partial charge ordering in Sm4Bi3 is consistent with the smaller electronic component in the entropy change at the charge ordering transition.

Original languageEnglish
Article number042035
JournalJournal of Physics: Conference Series
Volume950
Issue number4
DOIs
Publication statusPublished - 2017 Nov 7
EventJoint AIRAPT-25th and EHPRG-53rd International Conference on High Pressure Science and Technology - Madrid, Spain
Duration: 2015 Aug 302015 Sep 4

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kobayashi, H., Yamaoka, S., Ikeda, S., Hirao, N., Ohishi, Y., Yoda, Y., & Ochiai, A. (2017). Charge ordering in Sm4Bi3 under pressure. Journal of Physics: Conference Series, 950(4), [042035]. https://doi.org/10.1088/1742-6596/950/4/042035