Nanostructured MnGa films on Si/SiO2 with 20.5 kOe room temperature coercivity
Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik)
Dumas, Randy K. (University of Gothenburg. Department of Physic)
Lau, J. W. (National Institute of Standards and Technology (U.S.). Metallurgy Division)
Mohseni, S. M. (Kungl. Tekniska högskolann. Materialfysik)
Sani, Sohrab R. (Kungl. Tekniska högskolann. Materialfysik)
Golosovsky, I. V. (Peterburgskiĭ institut i︠a︡dernoĭ fiziki im. B.P. Konstantinova.)
Monsen, A. F. (Norges Teknisk-Naturvitenskapelige Universitet. Department of Physics)
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Åkerman, Johan (Kungl. Tekniska högskolann. Materialfysik)

Date:	2011
Abstract:	Nanostructured Mn67Ga33 films exhibiting high room temperature coercivity (HC = 20. 5 kOe) have been prepared by sputtering onto thermally oxidized Si substrates. Both the morphology and the coercivity of the films can be tuned by varying the growth parameters. The low deposition rate film, sputtered at a reduced power and working pressure, demonstrates a discontinuous island-like growth and the highest HC. The large HC is linked to the presence of the high anisotropy DO22 Mn3Ga phase and the single domain character of the exchange isolated, dipolar interacting, single crystal islands.
Grants:	European Commission 247518 Ministerio de Ciencia e Innovación MAT2010-20616-C02-02 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-1292
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Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Materials ; Propietats magnètiques ; Pel·lícules fines
Published in:	Journal of applied physics, Vol. 110, Núm. 9 (Nov. 2011) , p. 093902/1-093902/4, ISSN 1089-7550

DOI: 10.1063/1.3656457

4 p, 822.3 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)
Articles > Research articles
Articles > Published articles