Structural changes with lead substitution in Bi2-xPbxSr2CoO6

被引：3

作者：

Jakubowicz, N ^{[1
]}

Grebille, D ^{[1
]}

Hervieu, M ^{[1
]}

Leligny, H ^{[1
]}

Raveau, B ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 25期

关键词：

D O I：

10.1088/0953-8984/12/25/303

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Structures refined for two members of the group of Bi2-xPbxSr2CoO6-type compounds are proposed. For x = 0.16, the structure is incommensurately modulated (a = 5.453(2) Angstrom, b = 5.426(2) Angstrom, c = 23.43(1) Angstrom. (q) over right arrow(star) = 0.245(2)(b) over right arrow(star) + (c) over right arrow(star), F2mm(0 beta 1)00s). For x = 0.8, the modulation becomes very weak and has been neglected in the structural refinement (a = 5.3117(7) Angstrom, b = 5.4232(6) Angstrom, c = 23.590(2) Angstrom, Pnan). A new interpretation of me undoped modulated Bi2Sr2CoO6 phase is given. A new type of configuration for the [BiO] layers is confirmed and original modulation features are elucidated in comparison with the related super-conducting cuprate phases.

引用

页码：5371 / 5389

页数：19

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