Reversal of individual Co islands

Magnetization Reversal of Individual Co Nanoislands.
S. Ouazi, S. Wedekind, G. Rodary, H. Oka, D. Sander, and J. Kirschner
Phys. Rev. Lett. 108, 107206 (2012)

Island size dependence of the energy barrier Delta E. (a) The blue curve is a linear fit Delta E_lin=K(N-N0)The red curve shows the calculated energy barrier for domain wall formation Delta E_dw= 4 sigma sqrt(AK).
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