Clustering effect on frequency-dependent magnetic properties of Fe-Co micro hollow fiber composites

Title
Clustering effect on frequency-dependent magnetic properties of Fe-Co micro hollow fiber composites
Authors
김종렬
Keywords
Clustering effect; Landau-Lifshitz-Gilbert (LLG) equation; magnetic permeability; soft magnetic composite; OVERLAPPING ELLIPSOIDS; PERMEABILITY; PERCOLATION
Issue Date
2017-06
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON MAGNETICS, v. 53, No. 11, Article no. 2300705
Abstract
Composite sheets including Fe-Co magnetic hollow fibers are applicable to near-field electromagnetic wave absorption sheets operating in excess of 1 GHz. To understand the frequency-dependent permeability behavior of composite sheets, the Landau-Lifshitz-Gilbert equation and effective medium theory which are including the effects of the eddy current losses of isolated fibers and magnetostatic correction in high volume fractions can be used. However, the simulation considering only these factors requires a very high damping factor to explain the measured results. Thus, the simulation also needs the consideration of the clustering effect of particles causing the additional eddy current losses. In this paper, a new simulation method for magnetic sheets with clustered particles is proposed to improve an understanding of changes in the high-frequency properties of magnetic composite sheets due to the clustering effect.
URI
https://ieeexplore.ieee.org/abstract/document/7954703/http://repository.hanyang.ac.kr/handle/20.500.11754/72152
ISSN
0018-9464; 1941-0069
DOI
http://dx.doi.org/10.1109/TMAG.2017.2718181
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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