Micromagnetic Simulation on the Dynamic Permeability Spectrum of Micrometer Sized Magnetic Elements

Liu Huanhuan; Wang Qi; Zhang Huaiwu; Zhong Zhiyong

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Micromagnetic Simulation on the Dynamic Permeability Spectrum of Micrometer Sized Magnetic Elements

Liu Huanhuan,Wang Qi,Zhang Huaiwu,Zhong Zhiyong * #

State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054

*Correspondence author

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Funding: Supported by Research Fund for the Doctoral Program of Higher Education of China （No.No. 20120185110029）

Opened online: 9 January 2014

Accepted by: none

Citation: Liu Huanhuan,Wang Qi,Zhang Huaiwu.Micromagnetic Simulation on the Dynamic Permeability Spectrum of Micrometer Sized Magnetic Elements[OL]. [ 9 January 2014] http://en.paper.edu.cn/en_releasepaper/content/4577625

The inductance of a thin film inductor with magnetic core is much less than μ'(magnetic core's permeability) times that of inductor without magnetic core due to the complicated magnetic structure in the scaled-down magnetic elements. Therefore, it is very important to optimize the magnetic structure in the micrometer sized magnetic elements for improving the inductance value of the thin film inductor with magnetic core.. In this paper, the magnetization dynamics and magnetic structure have been investigated by creating an additional internal boundary in the micrometer sized magnetic element using micromagnetic simulation method. The simulated results show that the permeability of micromagnetic core can be promoted 32.5% than that of magnetic element with no slits when the slits are added in the middle of magnetic element. It opens a new way to improve the dynamic high frequency characteristics of micrometer sized magnetic element, which can be used in a thin film inductor.

Keywords:Micromagnetic simulation; Micro magnetic element; Dynamic permeability spectrum; Thin film inductors

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