Micromagnetic simulations show that disordered iron-oxide nanoflowers exhibit a secondary coercivity maximum in the vortex state, at the transition between core-dominated and flux-closure-dominated reversal.
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Coercivity-size map of magnetic nanoflowers: spin disorder tunes the vortex reversal mechanism and tailors the hyperthermia sweet spot
Micromagnetic simulations show that disordered iron-oxide nanoflowers exhibit a secondary coercivity maximum in the vortex state, at the transition between core-dominated and flux-closure-dominated reversal.