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Nucleation field,reversal mechanism and coercivity paradox in two-phased magnetic nanosystem |
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| Authors: | ZHAO GuoPing ZHANG HuaiWu ZHONG ZhiYong & CHEN Lang College of Physics Electronic Engineering Sichuan Normal University Chengdu China State Key Laboratory of Electronic Thin Films Integrated Devices University of Electronic Science Technology of China Chengdu School of Materials Science Engineering Nanyang Technological University Singapore Singapore |
| Institution: | ZHAO GuoPing1,2,3*,ZHANG HuaiWu2,ZHONG ZhiYong2 & CHEN Lang3 1 College of Physics and Electronic Engineering,Sichuan Normal University,Chengdu 610066,China,2 State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,3 School of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore |
| Abstract: | The magnetic reversal mechanism has been determined within a micromagnetic model reliably for a two-phased magnetic nanosystem,with the formulae for nucleation fields derived analytically.It is found that the nucleation field HN decreases uniformly as the size of the soft phase Ls increases whereas it increases with the size of the hard phase Lh.The analysis shows that whilst the effect of Lh could be ignored in most cases,where the nucleation field is dominated by the Ls and the calculation could be signif... |
| Keywords: | coercivity mechanism multilayers micromagnetic calculation |
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