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Large enhancement of magnetic moment in L1(0) ordered FePt thin films by Nd substitutional doping
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2015 (English)In: Journal of Physics D: Applied Physics, ISSN 0022-3727, E-ISSN 1361-6463, Vol. 48, no 25, 255001Article in journal (Refereed) Published
Abstract [en]

We studied L1(0) ordered Fe50Pt50-xNdx alloy films, which showed a large enhancement (similar to 18.4% at room temperature and similar to 11.7% at 10 K) of magnetic moment with 6 atomic % of Nd. Analysis of the x-ray magnetic circular dichroism spectra at the Fe L-3,L-2 edges and Nd M-5,M-4 edges in Fe50Pt44Nd6 films indicated a significant contribution of the Nd orbital moment. The origin of the large enhancement of magnetic moment was attributed to the effect of ferromagnetic coupling of the total magnetic moments between Fe and Nd. Density functional theory based first principles calculations supported the experimental observations of increasing moment due to Nd substitution of Pt.

Place, publisher, year, edition, pages
2015. Vol. 48, no 25, 255001
Keyword [en]
L1(0) FePt, substitutional doping, magnetic moment
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-256803DOI: 10.1088/0022-3727/48/25/255001ISI: 000355233600001OAI: oai:DiVA.org:uu-256803DiVA: diva2:827844
Available from: 2015-06-29 Created: 2015-06-26 Last updated: 2017-12-04Bibliographically approved

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Sanyal, Biplab

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