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

Ehresmann, Arno; Lengemann, Daniel; Weis, Tanja; Albrecht, Alla; Langfahl-Klabes, Jannick; Göllner, Florian; Engel, Dieter · Adv Mater · 2011

basic_science · Level V

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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.

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