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|Title:||Effects of interlayer coupling in elongated Ni80Fe 20/Au/Co nanorings||Authors:||Ren, Y.
|Issue Date:||Jun-2010||Citation:||Ren, Y., Adeyeye, A.O., Nam, C., Ross, C.A. (2010-06). Effects of interlayer coupling in elongated Ni80Fe 20/Au/Co nanorings. IEEE Transactions on Magnetics 46 (6) : 1906-1909. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2009.2038799||Abstract:||We describe the magnetization reversal processes in multilayer elongated Ni80Fe20(10nm)/Au(t = 0 to 20 nm)/Co(20nm)/Si(001) nanorings. For a field applied in-plane along the long axis, the hysteresis loops display a two-step switching for both t = 0 nm and 2 nm, and a three-step switching for t=10 nm and 20 nm. Onion-to-vortex and vortex-to-reverse onion state transitions occur for a thin Au spacer due to strong exchange coupling between the layers. For a thick Au spacer layer, the Ni80Fe 20 layer switches first, then a two-step reversal of the Co, correlated with domain motion in the Ni80Fe20, occurs without the formation of vortex states as a result of magnetostatic interactions. There is a good agreement between the experimental results and micromagnetic simulations. © 2006 IEEE.||Source Title:||IEEE Transactions on Magnetics||URI:||http://scholarbank.nus.edu.sg/handle/10635/83680||ISSN:||00189464||DOI:||10.1109/TMAG.2009.2038799|
|Appears in Collections:||Staff Publications|
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