S Allende et al 2009 Nanotechnology 20 445707 doi:10.1088/0957-4484/20/44/445707
S Allende1,2, J Escrig1,3, D Altbir1,3, E Salcedo4 and M Bahiana5
Show affiliationsThe hysteresis of multilayer nanowires composed by a soft magnetic cylindrical wire, a non-magnetic spacer layer and an external hard magnetic shell is investigated. The external magnetic shell originates a non-homogeneous magnetic field on the inner wire, which is responsible for a displacement and a change of the width of the hysteresis curve of the wire. Moreover, different reversal modes occur at each branch of the hysteresis loop, which can be understood by analyzing the interaction magnetostatic field along the wire. Our results open the possibility of controlling two parameters of the hysteresis loop, the coercivity and the bias, providing an interesting system to be investigated.
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
75.70.Cn Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
Condensed matter: electrical, magnetic and optical
Issue 44 (4 November 2009)
Received 3 June 2009, in final form 4 September 2009
Published 7 October 2009
S Allende et al 2009 Nanotechnology 20 445707
A Faure et al 2009 J. Phys.: Conf. Ser. 192 012016
Sean D Peterson et al 2008 Meas. Sci. Technol. 19 115406
I G Kazantsev et al 2009 Inverse Problems 25 105009
X P Zheng et al 2009 J. Phys.: Conf. Ser. 188 012002
Shahid M. Ramay et al 2009 Chinese Phys. Lett. 26 117504
Th Glatzel et al 2009 Nanotechnology 20 264016
P Buonsante and V Penna 2008 J. Phys. A: Math. Theor. 41 175301
Ma Shan-Shan et al 2009 Chinese Phys. Lett. 26 117201
Xu Shi-Xiang et al 2009 Chinese Phys. Lett. 26 114209