Structural Change at Metal-Insulator Transition of Tb2Ba2Co4O11

Hiroyuki Kusuya, Akihiko Machida, Yutaka Moritomo, Kenichi Kato, Eiji Nishibori, Masaki Takata, Makoto Sakata, Arao Nakamura

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Temperature variation of the crystal structure has been investigated for Tb2Ba2CO4O11, which shows a metal-insulator (MI) transition at TMI = 340 K. The compound has a layered-type double-perovskite structure along the c-axis, with alternating the CoO6 octahedron and the CoO5 pyramids along the a-axis. With decrease of temperature below TMI, the distortion of the octahedral and pyramidal sites is fairly released, suggesting that spin state transition of the Co3+ ions is the origin for the MI transition.

Original languageEnglish
Pages (from-to)3577-3580
Number of pages4
JournalJournal of the Physical Society of Japan
Volume70
Issue number12
DOIs
Publication statusPublished - 2001 Dec
Externally publishedYes

Keywords

  • Double-perovskite structure
  • Metal-insulator transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structural Change at Metal-Insulator Transition of Tb2Ba2Co4O11'. Together they form a unique fingerprint.

  • Cite this

    Kusuya, H., Machida, A., Moritomo, Y., Kato, K., Nishibori, E., Takata, M., Sakata, M., & Nakamura, A. (2001). Structural Change at Metal-Insulator Transition of Tb2Ba2Co4O11 . Journal of the Physical Society of Japan, 70(12), 3577-3580. https://doi.org/10.1143/JPSJ.70.3577