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Pàgina inicial > Articles > Articles publicats > Role of anisotropy configuration in exchange-biased systems |
Data: | 2011 |
Resum: | We present a systematic study of the anisotropy configuration effects on the magnetic properties of exchange-biased ferromagnetic/antiferromagnetic (FM/AFM) Co/IrMn bilayers. The interfacial unidirectional anisotropy is set extrinsically via a field cooling procedure with the magnetic field misaligned by an angle bFC with respect to the intrinsic FM uniaxial anisotropy. High resolution angular dependence in-plane resolved Kerr magnetometry measurements have been performed for three different anisotropy arrangements, including collinear bFC =0º and two opposite noncollinear cases. The symmetry breaking of the induced noncollinear configurations results in a peculiar nonsymmetric magnetic behavior of the angular dependence of magnetization reversal, coercivity, and exchange bias. The experimental results are well reproduced without any fitting parameter by using a simple model including the induced anisotropy configuration. Our finding highlights the importance of the relative angle between anisotropies in order to properly account for the magnetic properties of exchange-biased FM/AFM systems. |
Ajuts: | Ministerio de Ciencia e Innovación MAT2010-20616-C02-02 Ministerio de Ciencia e Innovación MAT2010-22822 Ministerio de Ciencia e Innovación CSD2007-00010 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-1292 |
Nota: | This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Matèria condensada |
Publicat a: | Journal of applied physics, Vol. 109, Núm. 7 (April 2011) , p. 07D730/1-07D730/3, ISSN 1089-7550 |
3 p, 1.0 MB |