Structural phase transition in the superconducting pyrochlore oxide Cd2Re2O7

M. Hanawa, J. Yamaura, Yuji Muraoka, F. Sakai, Z. Hiroi

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Abstract

We report a structural phase transition found at Ts = 200 K in a pyrochlore oxide Cd2Re2O7 which shows superconductivity at Tc = 1.0 K. X-ray diffraction experiments indicate that the phase transition is of the second-order, from a high-temperature phase with the ideal cubic pyrochlore structure (space group Fd3̄m) to a low-temperature phase with another cubic structure (space group F4̄3m). It is accompanied by a dramatic change in the resistivity and magnetic susceptibility and thus must induce a significant change in the electronic structure of Cd2Re2O7.

Original languageEnglish
Pages (from-to)1027-1030
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume63
Issue number6-8
DOIs
Publication statusPublished - Jun 2002
Externally publishedYes

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Keywords

  • A. Oxides
  • A. Superconductors
  • C. X-ray diffraction
  • D. Electrical properties
  • D. Phase transitions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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