TY - JOUR
T1 - The ability of RP-type cobaltites to accommodate carbonate groups
T2 - A new layered oxide Sr4Co2(CO3)O5.86
AU - Demont, A.
AU - Pelloquin, D.
AU - Hébert, S.
AU - Bréard, Y.
AU - Höwing, J.
AU - Miyazaki, Y.
AU - Maignan, A.
PY - 2011/7
Y1 - 2011/7
N2 - 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.
AB - 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.
KW - Cobaltite
KW - Oxycarbonate
KW - Powder neutron diffraction data
KW - Transmission electron microscopy
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U2 - 10.1016/j.jssc.2011.04.004
DO - 10.1016/j.jssc.2011.04.004
M3 - Article
AN - SCOPUS:79959779868
SN - 0022-4596
VL - 184
SP - 1655
EP - 1660
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 7
ER -