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

doi:10.1016/j.jssc.2011.04.004

The ability of RP-type cobaltites to accommodate carbonate groups: A new layered oxide Sr₄Co₂(CO₃)O_5.86

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

ENG - Applied Physics

Research output: Contribution to journal › Article › peer-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)O_5.86 and its structural characterizations at room temperature combining TEM observations and powder neutron diffraction data. Close structural relationships are observed with the homologous Sr₄Fe_3-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 language	English
Pages (from-to)	1655-1660
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	184
Issue number	7
DOIs	https://doi.org/10.1016/j.jssc.2011.04.004
Publication status	Published - 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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title = "The ability of RP-type cobaltites to accommodate carbonate groups: A new layered oxide Sr4Co2(CO3)O5.86",

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.",

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AU - Hébert, S.

AU - Bréard, Y.

AU - Höwing, J.

AU - Miyazaki, Y.

AU - Maignan, A.

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