Dynamic susceptibility spectra analysis of ferromagnetic spheres via micromagnetic simulations

2nd International Conference on Current Progress in Functional Materials 2017

Djuhana, D.^1 ; Kurniawan, C.^2 ; Widodo, A.T.^1

Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok

16424, Indonesia^1

Center for Physics Research, Indonesian Institute of Sciences (LIPI), Kawasan Puspitek No. 441-442, Serpong, Banten

15314, Indonesia^2

关键词: Dynamic susceptibility;    External fields;    Frequency domains;    Imaginary parts;    Micromagnetic simulations;    Resonance frequencies;    Spectra analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/496/1/012027/pdf
DOI  :  10.1088/1757-899X/496/1/012027

来源: IOP

【 摘 要 】

Herein, we report the dynamic susceptibility spectra of ferromagnetic spheres with diameters varying from 50 to 100 nm determined via micromagnetic simulations. The dynamic susceptibility spectra were calculated based on magnetization and the external field response in the frequency domain using Fourier transforms. The peak of the imaginary part of the dynamic susceptibility spectra, which indicates the resonance frequency of the ferromagnetic material, is interestingly near Kittel's resonance frequency.