Abstract
When core-shell magnetic nanowires are used as high-density magnetic storage units,the upper limit of magnetic storage rate is limited by the resonant frequency of the system.In order to investigate the effect of antiferromagnetic interfacial exchange interaction on the resonance behavior of core-shell magnetic nanowires,the dynamic behavior of the system was studied by means of micromagnetic simulation.In this study,two systems were considered,namely the system with ferromagnetic interfacial exchange interaction and the system with antiferromagnetic interfacial exchange interaction.Firstly,the effect of interfacial exchange interactionon the magnetic resonance behavior of the system was discussed.It was found that the magnetic resonance frequency of the system with antiferromagnetic interfacial exchange interactionwas slightly higher than that of the ferromagnetic system.Then the influence of the external DC magneticfield on the resonance frequency and resonance linewidth of the system was discussed.It was found that the resonance linewidth of the system with antiferromagnetic interfacialexchangeinteractionwas nonlinear to the intensity of the external DC magneticfield.Finally,the influence of temperature on the magnetic resonance behavior of the systems was discussed.It was found that the thermal stability of ferromagnetic system was stronger than that of the system with antiferromagnetic interfacial exchange interaction.
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