Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) study of melt-spun Fe85Ga15 ribbons

被引：9
作者：
Turtelli, R. Sato [1 ]
Pascarelli, S. [2 ]
Ruffoni, M. [2 ]
Groessinger, R. [1 ]
Eisenmenger-Sittner, C. [1 ]
机构：
[1] Vienna Univ Technol, Inst F Festkorperphys, A-1040 Vienna, Austria
[2] European Synchroton Radiat Facil, F-38043 Grenoble, France
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2008年 / 320卷 / 20期
关键词：
Fe-Ga alloy; magnetostriction; EXAFS; XANES;
D O I：
10.1016/j.jmmm.2008.04.036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The local structure in melt-spun Fe85Ga15 ribbons with a width similar to 3mm and thickness similar to 60 mu m produced in argon atmosphere was studied by analyzing EXAFS and XANES data. The following results were obtained: Ga-Ga bonds were not detected excluding the tendency to form clusters of Ga atoms; Ga substitutes Fe creating a local strain of about +1% on the first shell Fe-Ga bond, whereas on the second Fe-Ga shell strain quickly relaxes down to +0.3%; XANES spectra are compatible with a random substitution of Fe atoms by Ga atoms in the A2 structure. From the AFM investigation, we observed that at the surface ( free side) of the ribbon the particles are elongated along the ribbon (similar to 2 mu m x similar to 5 mu m)and each particle is formed by small grains of average size of 200 nm. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：E578 / E582
页数：5
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