Asymmetric magnetization reversal of stripe-patterned exchange bias layer systems for controlled magnetic particle transport

Abstract

Domain wall movement assisted transport of particles: Exchange-biased samples with designed stripe-domains show strong stray fields and an asymmetric magnetization reversal. Using these characteristics superparamagnetic particles can be trapped and transported directly on the sample over large-scale areas. High particle velocities, small external fields, and automatically reduced particle clustering allow broad applicability of this transport method. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.