XAFS study on site occupation of cobalt and iron in Z-type ferrite Ba3CO2-xFe24+xO41

被引：17

作者：

Nakagawa, T

Yuya, M

Tachibana, T

Takada, Y

Nitani, H

Emura, S

Yamamoto, TA

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Nucl Engn, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Inst Sci & Ind Res, Ibaraki 5670047, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 288卷

关键词：

Z-type ferrite; ion distribution; EXAFS; XANES;

D O I：

10.1016/j.jmmm.2004.09.121

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Distributions of cobalt and iron ions over three kinds of sites in the Co(2)Z-type Ba-ferrite (Ba3Co2-xFe24+xO41, x = 0, 0.2 0.4, 0.6) were studied by examining X-ray absorption fine structure (XAFS) at Co-K, Fe-K edges. Analyses were performed in terms of both extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) to estimate bond lengths, coordination numbers and valences of cobalt and iron ions. The results reasonably agree with those of the previous neutron diffraction analyses. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：366 / 373

页数：8

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