Vortex chirality control in magnetic submicron dots with asymmetrical magnetic properties in lateral direction |
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| Authors: | Zhiyong Zhong Huaiwu Zhang Yulan Jing Shuang Liu |
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| Affiliation: | a State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
b School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | The authors use micromagnetic simulation to investigate the magnetization reversal process of a new ferromagnetic submicron dot structure composed of a lateral gradient magnetization. The reversal process in this new structure begins at the both edges along and is perpendicular to the applied magnetic field due to introducing a demagnetizing field from the interface of the magnetization gradient. This leads to a two-stage nucleation process. Based on the analytical results, a novel submicron structure with a quarter of lateral gradient magnetization is proposed to control the chirality of a vortex, which is important for applications that use the vortex's chirality. |
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| Keywords: | Magnetic vortex Micromagnetic simulation Magnetization reversal Magnetic nanostructures |
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