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Effect of Aluminium Substitution in RT2 Compounds (R = rare-earth, T = transition metal) on the Magnetic Properties by Modification of the Electronic Structure.

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Title: Effect of Aluminium Substitution in RT2 Compounds (R = rare-earth, T = transition metal) on the Magnetic Properties by Modification of the Electronic Structure.
Authors: Boada, R.1, Laguna-Marco, M. A.1,2, Piquer, C.1, Jiménez-Villacorta, F.3, Chaboy, J.1
Source: IEEE Transactions on Magnetics. Nov2008 Part 2 of 2, Vol. 44 Issue 11, p4214-4217. 4p. 4 Graphs.
Subjects: Aluminum, Rare earth metal alloys, Dilution, Magnetic properties
Abstract: We present an X-ray absorption spectroscopy (XAS) study performed at both the Fe K-edge and rare-earth L1,3-edges of the R1-∞R∞'(Fe1-yAly)2 series (R = Ho, Er and R' = Lu, Y). We show that substitution of the rare-earth (Ho, Er) by a non-magnetic one (Y, Lu) acts as a simple magnetic dilution effect. In contrast, the magnetic properties of these systems are drastically changed when Fe is substituted by the non-magnetic Al, independently of the rare-earth involved. The combined study of the different regions of the absorption spectra for the different atomic species in these materials allow us to disentangle the structural and electronic effects of the substitution. Our results reveal that the change of the magnetic properties upon Al substitution are triggered by the strong modification of the density of states (DOS) which also affects the R(5d)-Fe(3d) hybridization. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Magnetics%22">IEEE Transactions on Magnetics</searchLink>. Nov2008 Part 2 of 2, Vol. 44 Issue 11, p4214-4217. 4p. 4 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Aluminum%22">Aluminum</searchLink><br /><searchLink fieldCode="DE" term="%22Rare+earth+metal+alloys%22">Rare earth metal alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Dilution%22">Dilution</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties%22">Magnetic properties</searchLink>
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  Data: We present an X-ray absorption spectroscopy (XAS) study performed at both the Fe K-edge and rare-earth L1,3-edges of the R1-∞R∞'(Fe1-yAly)2 series (R = Ho, Er and R' = Lu, Y). We show that substitution of the rare-earth (Ho, Er) by a non-magnetic one (Y, Lu) acts as a simple magnetic dilution effect. In contrast, the magnetic properties of these systems are drastically changed when Fe is substituted by the non-magnetic Al, independently of the rare-earth involved. The combined study of the different regions of the absorption spectra for the different atomic species in these materials allow us to disentangle the structural and electronic effects of the substitution. Our results reveal that the change of the magnetic properties upon Al substitution are triggered by the strong modification of the density of states (DOS) which also affects the R(5d)-Fe(3d) hybridization. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Magnetics is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TMAG.2008.2001315
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        Text: English
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        Type: general
      – SubjectFull: Rare earth metal alloys
        Type: general
      – SubjectFull: Dilution
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      – TitleFull: Effect of Aluminium Substitution in RT2 Compounds (R = rare-earth, T = transition metal) on the Magnetic Properties by Modification of the Electronic Structure.
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              Text: Nov2008 Part 2 of 2
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