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 language | English |
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Pages (from-to) | 1655-1660 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 184 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2011 Jul |
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