Continuously graded anisotropy in single (Fe53Pt47)100−xCux films
Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik)
Dumas, Randy K. (University of Gothenburg. Department of Physic)
Fang, Yeyu (Kungl. Tekniska högskolann. Materialfysik)
Bonanni, Valentina (Kungl. Tekniska högskolann. Materialfysik)
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Aakerman, Johan (Kungl. Tekniska högskolann. Materialfysik)
American Physical Society

Date:	2010
Abstract:	We report on continuously graded anisotropy. During deposition, a compositional gradient is achieved by varying the Cu concentration from Cu-rich (Fe53Pt47)70Cu30 to Cu-free Fe53Pt47. The anisotropy gradient is then realized after annealing using the composition dependence of the low-anisotropy (A1) to high-anisotropy (L10) ordering temperature. The critical role of the annealing temperature on the resultant anisotropy gradient is investigated. Magnetic measurements support the creation of an anisotropy gradient in properly annealed films which exhibit both a reduced coercivity and moderate thermal stability. These results demonstrate that an anisotropy gradient can be realized, and tailored, in single continuous films without the need for multilayers.
Note:	This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Aliatges metàl·lics ; Metalls ; Propietats magnètiques ; Anisotropia ; Pel·lícules fines
Published in:	Applied physics letters, Vol. 97, Issue 18 (November 2010) , p. 182504/1-182504/3, ISSN 1077-3118

DOI: 10.1063/1.3505521

3 p, 409.4 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
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Articles > Published articles