The effects of shape anisotropy of the magnetic particles in a composite on RF power absorption

Author

Baekil Nam ; Jinu Kim ; Joonsik Lee ; Ki Hyeon Kim

Author_Institution

Phys. Dept., Yeungnam Univ., Kyongsan, South Korea

fYear

2015

fDate

26-29 May 2015

Firstpage

528

Lastpage

531

Abstract

The shape anisotropy of the magnetic particles in a composite film for EMI applications plays a key role in their performance. For a few types of the particles such as wires and hollow fibers, permeabilities of the particles and in-line attenuation of the composite were evaluated by simulations. With the change of the shape anisotropy by aspect ratio or hollow ratio, power absorption could be controlled in frequency. In experiments, Ni/FeCo magnetic hollow fibbers were fabricated by electroless plating and power loss of the composite filled with the fibbers was evaluated.

Keywords

electroless deposition; electromagnetic interference; iron compounds; magnetic anisotropy; magnetic particles; nickel; EMI applications; Ni-FeCo; Ni-FeCo magnetic hollow fibers; RF power absorption; aspect ratio; composite film; electroless plating; hollow ratio; in-line attenuation; magnetic particles; permeabilities; power loss; shape anisotropy; wires; Demagnetization; Magnetic resonance; Optical fiber theory; Permeability; Perpendicular magnetic anisotropy; Saturation magnetization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2015 Asia-Pacific Symposium on

Conference_Location

Taipei

Print_ISBN

978-1-4799-6668-4

Type

conf

DOI

10.1109/APEMC.2015.7175385

Filename

7175385