A bismuth cobaltite with an intrinsically modulated misfit layer structure:: [Bi0.87SrO2]2[CoO2]1.82

被引：76
作者：
Leligny, H
Grebille, D
Pérez, O
Masset, AC
Hervieu, M
Michel, C
Raveau, B
机构：
[1] Inst Sci Mat & Rayonnement, Lab CRISMAT, CNRS, UMR 6508, F-14050 Caen, France
[2] Univ Caen, F-14050 Caen, France
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE | 1999年 / 2卷 / 7-8期
关键词：
misfit oxide; bismuth cobaltite; modulated structure; X-ray;
D O I：
10.1016/S1387-1609(00)88553-9
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new misfit layer cobaltite [Bi0.87SrO2](2)[CoO2](1.82) has been synthesized. Its structure, solved from a single crystal X-ray investigation, shows CdI2 type [CoO2] layers similar to those encountered in misfit chalcogenides, but different rock salt (RS)-type [Bi0.87SrO2] layers. In contrast to the chalcogenides, these RS layers exhibit an intrinsic modulation due, as in the 2201 cobaltites, to the presence of double bismuth layers. Another fundamental difference with respect to misfit chalcogenides concerns the existence of strong Sr-O bonds between the [CoO2] layers and the [Bi0.87SrO2] layers, instead of weak bonds. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.
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收藏
页码：409 / 414
页数：6
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