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Title: Magnetization states in coupled Ni80Fe20 bi-ring nanostructures
Authors: Ren, Y. 
Jain, S. 
Adeyeye, A.O. 
Ross, C.A.
Issue Date: 1-Sep-2010
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.
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
ISSN: 13672630
DOI: 10.1088/1367-2630/12/9/093003
Appears in Collections:Staff Publications

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