Two-stage magnetization reversal in exchange biased bilayers
Leighton, C. (University of California, San Diego. Department of Physics)
Fitzsimmons, M. R. (Los Alamos National Laboratory)
Yashar, P. (Los Alamos National Laboratory)
Hoffmann, Axel (Los Alamos National Laboratory)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
Dura, J. (National Institute of Standards and Technology (Estats Units d'Amèrica))
Majkrzak, C. F. (National Institute of Standards and Technology (Estats Units d'Amèrica))
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
American Physical Society

Data:	2001
Resum:	MnF2/Fe bilayers exhibit asymmetric magnetization reversal that occurs by coherent rotation on one side of the loop and by nucleation and propagation of domain walls on the other side of the loop. Here, we show by polarized neutron reflectometry, magnetization, and magnetotransport measurements that for samples with good crystalline "quality" the rotation is a two-stage process, due to coherent rotation to a stable state perpendicular to the cooling field direction. The result is remarkably asymmetrically shaped hysteresis loops.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Physical review letters, Vol. 86, Issue 19 (May 2001) , p. 4394-4397, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.86.4394

4 p, 111.9 KB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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