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题名: Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks
作者: Dai, Z. M.;  Dai, Y. Y.;  Liu, W.;  Wang, T. T.;  Zhao, X. T.;  Zhao, X. G.;  Zhang, Z. D.
发表日期: 2017-7-10
摘要: Magnetic vortices in patterned nanocomposite structures have been studied. A double-vortex structure consisting of two vortex cores with opposite chiralities and two edge half-vortices is realized in a micron-size circular disk, which consists of [Co/Pd](7)/Ru/Py. A systemic study of the magnetization reversal of a double-vortex state and a single vortex state in an out-of-plane applied field has been performed by means of magnetic force microscopy. It is found that the interlayer exchange and dipolar interactions are critical for nucleation and annihilation of the double-vortex and the single vortex states. Micromagnetic simulations prove that the double-vortex state can stably exist in a patterned nanocomposite structure. Magnetic configurations ranging from the double-vortex and single vortex states to other multidomain states and the in-plane single-domain state are observed. The dependence of the magnetic configuration on the thickness of the soft-magnetic layer and spacer layer is presented in an experimental phase diagram. The results can significantly widen the practical applications of vortices on the three-dimensional spintronic memory and logic devices. Published by AIP Publishing.
刊名: APPLIED PHYSICS LETTERS
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Dai, Z. M.,Dai, Y. Y.,Liu, W.,et al. Magnetization Reversal Of Vortex States Driven By Out-of-plane Field In The Nanocomposite Co/pd/ru/py Disks[J]. Applied Physics Letters,2017,111(2):-.

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