4.8 Article

Reversal of Flux Closure States in Cobalt Nanoparticle Rings With Coaxial Magnetic Pulses

Journal

ADVANCED MATERIALS
Volume 20, Issue 22, Pages 4248-4252

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200702941

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Funding

  1. National Science Foundation [CHE-0243496]
  2. Defense Advanced Research Project Agency
  3. Royal Society
  4. Wiley InterScience

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Bistable flux closure (FC) states in Co nanoparticle rings can be switched reversibly by applying a coaxial magnetic field (H-z). The FC switching phenomena can be reproduced by micromagnetics simulations, which also reveal novel magnetic states at intermediate applied field strengths.

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