The ability of RP-type cobaltites to accommodate carbonate groups: A new layered oxide Sr4Co2(CO3)O5.86

A. Demont, D. Pelloquin, S. Hébert, Y. Bréard, J. Höwing, Y. Miyazaki, A. Maignan

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The possibility to introduce carbonate groups inside a pure cobalt based Ruddlesden Popper type matrix is demonstrated. This paper reports the synthesis as a single phase of a new layered oxycarbonate Sr4Co 2(CO3)O5.86 and its structural characterizations at room temperature combining TEM observations and powder neutron diffraction data. Close structural relationships are observed with the homologous Sr4Fe3-x(CO3)xO 10-4x series and deal with the presence of two specific carbonate configurations, namely coat hanger and flag. Magnetization measurements reveal a complex antiferromagnetic behavior below 50 K with three others transitions, at 160, 210 and 250 K. Such behavior can be ascribed to the latent reactivity in air of this largely oxygen deficient phase.

Original languageEnglish
Pages (from-to)1655-1660
Number of pages6
JournalJournal of Solid State Chemistry
Volume184
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

Keywords

  • Cobaltite
  • Oxycarbonate
  • Powder neutron diffraction data
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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