Study on Micro-magnetic Simulation of Magnetic State of TbFeCo/Anodized Aluminum Oxide Film |
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| Authors: | Fang Jin Xin Zhang Wei-ming Cheng Xiao-fei Yang |
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| Affiliation: | 1. Faculty of Mechanical & Electronic Information, China University of Geosciences, Wuhan, Hubei, 430074, China
2. Department of Electronic Science & Technology, Huazhong Univ. of Sci. & Tech, Wuhan, Hubei, 430074, China
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| Abstract: | Based on the experimental study of the AAO underlayer??s effect on the magnetic properties and structure, combining micro-magnetic theory as well, TbFeCo/AAO film magnetic properties and magnetic reversal characteristics were analyzed by finite-element micro-magnetic calculation software Magpar. With limited hardware conditions for the computer, a TbFeCo perpendicular magnetization films model with 9×9 matrix particles was simulated. It was found that for the pinning effect of non-magnetic porous AAO barrier film on TbFeCo particle film, the coercivity of isolated TbFeCo/AAO film (2100 kA/m) was larger than the coercivity of continuous TbFeCo film (2000 kA/m). The exchange coupling among the film particles, which was affected by AAO barrier film, led to a longer magnetization reversal time of isolated TbFeCo films than that of continuous ones. |
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