A relative of Sr4Fe6O13 with double perovskite layers:: Bi4Sr14Fe24O56, m=2-members of a potential series [(Sr,Bi)2Fe4O7-δ][(Sr,Bi)2Fe2O6]m

被引：6
|
作者：
Lepoittevin, C [1 ]
Malo, S [1 ]
Hervieu, M [1 ]
Grebille, D [1 ]
Raveau, B [1 ]
机构：
[1] ENSICAEN, UMR CNRS 6508, Lab CRISMAT, F-14050 Caen 4, France
来源：
CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 26期
关键词：
D O I：
10.1021/cm048730j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new ferrite Bi4Sr14Fe24O56 (i.e., Bi4/3Sr14/3FeSO18.66) has been synthesized. The high-resolution electron microscopy study of this oxide shows that its modulated structure consists of an original intergrowth of double perovskite layers [(SriBi)(2)Fe2O6] with oxygen-deficient [(Sr,Bi)(2)Fe4O7-delta] layers. The latter are closely related to the [Sr2Fe4O7-delta] layers: ob-Served in Sr4Fe6O13, that is, built up of FeO5 bipyramids and distorted tetragonal pryamids. This new oxide appears as the member m = 2 of a potential series [(SriBi)(2)Fe4O7-delta] [(SriBi)(2)Fe2Odelta)(m). which offers a great possibility of cationic and oxygen nonstoichiometry. in connection with the structure modulation.
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页码：5731 / 5735
页数：5
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