Why the iron magnetization in Gd2Fe14B and the spontaneous magnetization of Y2Fe14B depend on temperature differently
Kuz'min, N. D. (Institut für Festkörper- und Werkstofforschung Dresden)
Givord, Dominique (Institut Néel (Grenoble, França))
Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física)
Date: |
2010 |
Abstract: |
It is demonstrated that the temperature dependence of the iron sublattice magnetization in Gd2Fe14B is affected significantly by the Gd-Fe exchange interaction. This is at variance with the common perception that MFe(T) in iron-rich rare-earth intermetallics is determined predominantly by the Fe-Fe exchange. This phenomenon is discussed by considering the modification of the low-energy spin-wave spectrum of Gd2Fe14B, as compared to that of Y2Fe14B, under the influence of the Gd-Fe interaction. The result is of particular significance for evaluating the temperature dependence of the magnetocrystalline anisotropy of iron or cobalt compounds with anisotropic rare earths (e. g. , Nd2Fe14B) and in turn, of the hard magnetic properties of such compounds. |
Note: |
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Rights: |
Tots els drets reservats. |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió publicada |
Subject: |
Materials ;
Propietats magnètiques |
Published in: |
Journal of applied physics, Vol. 107, Núm. 11 (June 2010) , p. 113924/1-113924/4, ISSN 1089-7550 |
DOI: 10.1063/1.3443576
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Record created 2013-06-20, last modified 2022-09-04