An oxygen-rich pyrochlore with fluorite composition

JB Thomson, AR Armstrong, Peter George Bruce

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

Oxygen has been intercalated into the pyrochlore Ce2Zr2O7 by heating under oxygen at a moderate temperature. A composition approaching fluorite (Ce2Zr2O7.97) has been obtained while retaining pyrochlore cation ordering. Whereas in flourite all oxide ions are in tetrahedral sites, the oxygen-rich pyrochlore exhibits vacancies in some tetrahedral sites and occupancy of a new trigonal site. The latter arises from oxide ions in octahedral 32e sites within the pyrochlore cation array. (C) 1999 Academic Press.

Original languageEnglish
Pages (from-to)56-62
Number of pages7
JournalJournal of Solid State Chemistry
Volume148
Publication statusPublished - 15 Nov 1999

Keywords

  • CHEMICAL INTERCALATION
  • ELECTROCHEMICAL OXIDATION
  • LA2CUO4

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