Magnetization reversal, asymmetry, and role of uncompensated spins in perpendicular exchange coupled systems
Camarero, Julio (Universidad Autónoma de Madrid. Departamento de Física de la Materia Condensada)
Miguel, J. (University of Amsterdam. Van der Waals-Zeeman Institute)
Goedkoop, J. B. (University of Amsterdam. Van der Waals-Zeeman Institute)
Vogel, J. (Laboratoire Louis Neel (Grenoble, França))
Romanens, F. (Laboratoire Louis Neel (Grenoble, França))
Pizzini, S. (Laboratoire Louis Neel (Grenoble, França))
Garcia, F. (SPINTEC (Spin Electronics Research))
Sort Viñas, Jordi (SPINTEC (Spin Electronics Research))
Dieny, B. (SPINTEC (Spin Electronics Research))
Brookes, N. B. (European Synchrotron Radiation Facility)
American Physical Society

Date:	2006
Abstract:	Soft x-ray resonant magnetic scattering has been used to investigate the element-selective microscopic magnetization reversal behavior of room temperature perpendicular exchange coupled ferromagnetic∕antiferromagnetic (F∕AF) systems and to study the role of the interfacial coupling strength on it. Different nucleation processes and domain size distributions along the decreasing and increasing branches of the reversal have been found. The size of the magnetic domains during reversal depends on both the F anisotropy and F∕AF coupling strength, decreasing when one of them increases. Evidence of the exchange bias(coercivity enhancement) being induced by pinned (unpinned) uncompensated AF interfacial spins is also shown.
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Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Magnetization reversals ; Nucleation ; Exchange interactions ; Thin film nucleation ; Coercive force ; Magnetic hysteresis ; F region ; Interface structure ; Magnetic anisotropy ; Magnetic films
Published in:	Applied physics letters, Vol. 89, Issue 23 (December2006) , p. 232507/1-232507/3, ISSN 1077-3118

DOI: 10.1063/1.2402882

4 p, 665.4 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)
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