The study of the shape anisotropy in patterned permalloy films |
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| Authors: | Zhang Dong Zhai Ya Zhai Hong-Ru |
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| Affiliation: | School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China; Department of Physics, Southeast University, Nanjing 210096, China; National Laboratory of Solid Microstructure, Center for Materials Analysis, Nanjing University, Nanjing 210093, China |
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| Abstract: | In this paper a systematic ferromagnetic resonance study shows that an in-planemagnetic anisotropy in the patterned micron octagonpermalloy (Ni$_{80}$Fe$_{20})$ elements is mainly determined by the elementgeometry. The easy-axis is along the edge of the elements, and the hard-axisis along the diagonal. The shape anisotropy of the octagon elements isdetermined by square and equilateral octagon, and the theoretical calculationwas studied on the shape anisotropy. The shape anisotropyof rectangular was calculated by using the same theory. |
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| Keywords: | patterned film shape anisotropy ferromagnetic resonance |
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