کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1811277 1525240 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetisation reversal in cylindrical nickel nanobars involving magnetic vortex structure: A micromagnetic study
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Magnetisation reversal in cylindrical nickel nanobars involving magnetic vortex structure: A micromagnetic study
چکیده انگلیسی
A three-dimensional, Fast-Fourier-Transformed (3D-FFT) micromagnetic simulation was employed to study the magnetization reversal mechanisms in cylindrical nickel nanobars possessing magnetic vortices. Individual Ni nanobars of height 150-250 nm with aspect ratio varying from 2.1 to 2.5 were considered, all of them supporting magnetic vortices domains. Magnetization reversal in these nanobars involves the vortex-creation-annihilation (VCA) mechanism with an inversion symmetry feature observed mid-way during reversal process. The effect of incidence angle of externally applied field on overall magnetization reversal process is examined in detail. The corresponding variations in coercivity, squareness, exchange energy and vortex parameters are described by the micromagnetic study that can shed insights for building practical Ni nanobars magnetic nanostructures/devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issues 6–7, 15 March 2011, Pages 1336-1340
نویسندگان
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