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

被引：4

作者：

Demont, A. ^{[1
]}

Pelloquin, D. ^{[1
]}

Hebert, S. ^{[1
]}

Breard, Y. ^{[1
]}

Howing, J. ^{[2
]}

Miyazaki, Y. ^{[3
]}

Maignan, A. ^{[1
]}

机构：

[1] UMR CNRS ENSI Caen 6508, Lab CRISMAT, F-14050 Caen, France

[2] Inst Veien, N-2007 Kjeller, Norway

[3] Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2011年 / 184卷 / 07期

关键词：

Cobaltite; Oxycarbonate; Powder neutron diffraction data; Transmission electron microscopy; CRYSTAL-STRUCTURE; SUPERCONDUCTOR; OXYCARBONATES; TRANSITION; N=2;

D O I：

10.1016/j.jssc.2011.04.004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 Sr4Co2(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 Sr4Fe3-x(CO3)(x)O10-4x series and deal with the presence of two specific carbonate configurations, namely coat hanger and flag. Magnetization measurements reveal a complex anti-ferromagnetic behavior below 50K 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. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：1655 / 1660

页数：6

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