Intermixing of Fe at Cu(1)-chain and Cu(2)-plane sites in FeSr2YCu2O7.30 system:: A neutron diffraction and Mossbauer spectroscopic study

被引：7

作者：

Awana, VPS ^{[1
]}

Malik, SK

Yelon, WB

Lindén, J

Karppinen, M

Yamauchi, H

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[3] Univ Missouri, Grad Ctr Mat Res, Rolla, MO 65409 USA

[4] Abo Akad Univ, Dept Phys, FIN-20500 Turku, Finland

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

Fe-1212; neutron diffraction; Mossbauer spectroscopy;

D O I：

10.1016/S0921-4526(01)01161-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The presently prepared FeSr2-YCu2Oz (Fe-1212) sample crystallizes in a tetragonal structure (space group P4/mmm). Rietveld structural refinement of the room temperature neutron diffraction data reveal that nearly half of the Fe remains at the Cu(1)-chain site while the other half goes to the Cu(2)-plane site in the nominal Cu(1)Sr2YCu(2)(2)O-7 or Cu-1212 structure. In this compound, Cu is distributed over the chain and plane sites appropriately. Oxygen content of the present Fe-1212 sample, as determined front the oxygen occupancies, is 7.30(2) per formula unit. Existence of Fe at the two different lattice sites is also confirmed from the room temperature Fe-57 Mossbauer spectrum of the compound. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：62 / 64

页数：3

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