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Regensburg 2013 – scientific programme

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MA: Fachverband Magnetismus

MA 50: Poster II

MA 50.12: Poster

Friday, March 15, 2013, 10:30–13:30, Poster D

Exchange bias in DyCo/NiFe bilayer — •Kai Chen1, Dieter Lott1, Andreas Schreyer1, R.S Iskhakov2,3, S.V Stolyar2,3, and V.Yu Yakovchuk21Institute for Materials Research, Helmholtz-Zentrum Geesthacht, 21502 Geesthacht , Germany — 2Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036,Russia — 3Siberian Federal University, Krasnoyarsk, 660041, Russia

High in-plane exchange bias up to 40 mT at room temperature was found through-out the whole hard ferrimagnetic layer of DyCo which is coupled to NiFe layer. The exchange bias effects can be achieved here by magnetizing the DyCo in perpendicu-lar direction in respect to the film plane. The direction of the shifts of the in-plane hysteresis is dependent on the direction of the pre-magnetization in the one or other direction. Results from magnetic optical Kerr effect (MOKE), X-ray magnetic cir-cular dichorism (XMCD) and Polarized Neutron Reflectometry (PNR) are discussed to investigate the mechanism behind.

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