Characteristics of the iron moment in Dy-Fe and Dy-FeCo amorphous alloys studied by X-ray magnetic circular dichroism

thin films; amorphous alloys; xmcd; synchrotron radiation; magnetic properties; magnetocrystalline anisotropy; magnetooptical properties; orbital magnetization; microscopic origin; thin-films; fields; probe; spin; ho; co

Abstract :

[en] The local magnetic moment of Fe in Dy-Fe and Dy-FeCo amorphous alloys has been studied using X-ray absorption spectroscopy and X-ray magnetic circular dichroism (XMCD). The Fe orbital and spin magnetic moments have been obtained for a range of alloy compositions by applying the sum rules to the XMCD spectra. The room temperature variations of the average components of the Fe moments as a function of Dy concentration and with the substitution of Fe by Co have been determined. A sharp reversal of the total magnetic moment was found at 28 +/- 1 at% Dy for both alloys. (C) 2000 Elsevier Science B.V. All rights reserved.

Disciplines :

Physics
Chemistry

Author, co-author :

Fleury-Frenette, Karl ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)

Dhesi, S. S.

van der Laan, G.

Strivay, David ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie - Centre européen en archéométrie

Weber, Georges ; Université de Liège - ULiège > Centre européen en archéométrie - Physique nucléaire, atomique et spectroscopie

Delwiche, Jacques ; Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)

Language :

English

Title :

Characteristics of the iron moment in Dy-Fe and Dy-FeCo amorphous alloys studied by X-ray magnetic circular dichroism

Publication date :

2000

Journal title :

Journal of Magnetism and Magnetic Materials

ISSN :

0304-8853

eISSN :

1873-4766

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

220

Issue :

Pages :

45-51

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 23 November 2010

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