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|Title:||Magnetization states in coupled Ni80Fe20 bi-ring nanostructures|
|Authors:||Ren, Y. |
|Citation:||Ren, Y., Jain, S., Adeyeye, A.O., Ross, C.A. (2010-09-01). Magnetization states in coupled Ni80Fe20 bi-ring nanostructures. New Journal of Physics 12 : -. ScholarBank@NUS Repository. https://doi.org/10.1088/1367-2630/12/9/093003|
|Abstract:||The effects of magnetostatic and exchange coupling between two circular Ni80Fe20 rings on the magnetization reversal process and spin configuration are investigated using focused magneto-optic Kerr measurements and magnetic force microscopy measurements. When the two rings are contiguous and exchange coupled, the reversal occurs via a three-stage process leading to a significant reduction of the vortex-onion switching fields when compared to magnetostatically coupled ring pairs or isolated rings of the same lateral dimensions. For exchange-coupled rings, the chirality of the vortices in the two rings is correlated. The experimental results are compared to micromagnetic simulations. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.|
|Source Title:||New Journal of Physics|
|Appears in Collections:||Staff Publications|
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