Abstract
The hysteresis of multilayer nanowires composed by a soft magnetic cylindrical wire, anon-magnetic spacer layer and an external hard magnetic shell is investigated. The externalmagnetic shell originates a non-homogeneous magnetic field on the inner wire, which isresponsible 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 canbe understood by analyzing the interaction magnetostatic field along the wire. Ourresults open the possibility of controlling two parameters of the hysteresis loop,the coercivity and the bias, providing an interesting system to be investigated.
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