Zero-bias-field microwave dynamic magnetic properties in trapezoidal ferromagnetic stripe
作者： Mei Bi , Xin Wang , Haipeng Lu , Li Zhang , Longjiang Deng
DOI: 10.1016/J.JMMM.2016.01.066
关键词: Boundary value problem 、 Spin wave 、 Exchange interaction 、 Ferromagnetism 、 Anisotropy 、 Excitation 、 Spin-½ 、 Physics 、 Magnetization 、 Condensed matter physics
摘要: Abstract Dynamic magnetization response of the axially magnetized ferromagnetic stripe with trapezoidal cross section has been studied. The beveled edges exhibits multiple resonant peaks modes under an in-plane microwave excitation compared single vertical edge surfaces. complexity observed is attributed to spatially nonuniform equilibrium spin distribution at edges. Micromagnetic simulations identify waves as localized mode modified This one also described by effective pinning boundary conditions taking into account finite-size effects, which related exchange interaction, surface anisotropy and dipole–dipole interaction. These results provide detailed insights nonlinear dynamics microstructures influenced properties.
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