| With the rapid development of information technology, the high frequency soft magnetic materials which is applied to this field become the hot research areas. The soft magnetic thin film are expected to realize the technical requirements of more lighter and more thinner, and become the inevitable trend of future when they work under the high frequency conditions. Soft magnetic thin films are widely used in magnetic storage and magnetic recording materials. So researching high frequency soft magnetic properties (such as resonant frequency, the anisotropy field, damping factor, etc) and the magnetization process of the soft thin film is very important. In this paper, we mainly researched the magnetization reversal mechanism and the high frequency performance of the soft magnetic thin films, with 30° fan-shaped gap:In this paper we used the OOMMF simulation software to simulate the magnetization reversal process of a series of elliptic Co ring with the fan-shaped gap. For magnet unit elliptic ring with fan-shaped gap, the relationship between fan-shaped gap position and the external magnetic field direction of the magnetic unit has a great influence on the whole vortex state. And whether the whole vortex structure appear, or with which forms is strictly dependent on the shape and size of magnetic units.The FeCo-based soft magnetic thin films have a good microwave properties, but their larger magnetocrystalline anisotropy and magnetostriction constant lead to a larger coercivity and a worse soft magnetic properties.In this paper we used the heavy rare earth elements Dy doping Fe65Co35-base. The easy axis coercivity of pure Fe65Co35-base thin films declind from 120 Oe to 20 Oe. Besides we researched the effect of sputtering pressure on the (Fe65Co35)100-xDyx thin films. FeCoDy thin films prepared in 0.4 Pa not only have a best soft magnetic properties, but also have a higher anisotropy filed and resonance frequency. |
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