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Tailoring the magnetization reversal of elliptical dots using exchange bias (invited)
Sort Viñas, Jordi (Institució Catalana de Recerca i Estudis Avançats)
Buchanan, K. S. (Argonne National Laboratory. Materials Science Division)
Pearson, J. E. (Argonne National Laboratory. Materials Science Division)
Hoffmann, Axel (Argonne National Laboratory. Materials Science Division)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)
Salazar Álvarez, Germán (Institut Català de Nanociència i Nanotecnologia)
Baró, M. D. (Universitat Autònoma de Barcelona. Departament de Física)
Miron, M. ((SPINTEC (Spin Electronics Research)))
Rodmacq, B. ((SPINTEC (Spin Electronics Research)))
Dieny, B. ((SPINTEC (Spin Electronics Research)))
Nogués i Sanmiquel, Josep (Institut Català de Nanociència i Nanotecnologia)

Date: 2008
Abstract: Exchange bias effects have been studied in elliptical dots composed of ferromagnetic Ni80Fe20-antiferromagnetic Ir20Mn80 bilayers. The magnetization reversal mechanisms and magnetic configurations have been investigated by magneto-optic Kerr effect and magnetic force microscopy. Although the obtained bias fields in these dots are relatively small, the magnetization reversal is found to be influenced by the ferromagnetic-antiferromagnetic coupling. Namely, for some off-axis angles of measurement, the magnetization reversal mechanism of the Ni80Fe20-Ir20Mn80 ellipses depends on whether exchange bias is induced along the minor or major axis of the ellipses. Hence, exchange bias is shown to be an effective means for tailoring the magnetization reversal of elliptical dots after sample fabrication.
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.
Note: Número d'acord de subvenció MINECO/MAT-2007-66302-C02
Note: Número d'acord de subvenció MINECO/HF2006-0197
Note: Número d'acord de subvenció AGAUR/2005/SGR-00401
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Ferromagnetisme ; Kerr, Efecte de ; Magnetisme ; Polarització (Electricitat)
Published in: Journal of applied physics, Vol. 103, Núm. 7 (April 2008) , p. 7C109/1-7C109/5, ISSN 0021-8979

DOI: 10.1063/1.2840467


6 p, 514.5 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles

 Record created 2014-06-06, last modified 2020-02-08



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