Analysis of radio-frequency losses of ferromagnetic composite materials

Author

Lebourgeois, Richard ; Ganne, Jean-Pierre ; Peyresoubes, Georges ; Rebernak, William ; Adenot, Anne-Lise ; Ache, Olivier

Author_Institution

Thales R&T, Orsay, France

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3153

Lastpage

3155

Abstract

The aim of this paper is to analyze the magnetic mechanisms responsible for the complex permeability and core losses of ferromagnetic composites for radio-frequency applications. We compared these composites with a Ni-Zn-Cu spinel ferrite. Core. losses were measured versus frequency (1.5-500 MHz) and induction level (0-25 mT). We show that the main contribution to permeability and core losses are rotational mechanisms.

Keywords

Q-factor; eddy current losses; ferromagnetic materials; induced anisotropy (magnetic); laminates; laminations; magnetic cores; magnetic leakage; magnetic permeability; soft magnetic materials; sputtered coatings; 0 to 25 mT; 1.5 to 500 MHz; complex permeability; core losses; ferromagnetic composites; in-plane uniaxial anisotropy; induced anisotropy; lamellar insulator ferromagnetic on edge; laminations; magnetic mechanisms; magnetic passive components; quality factor; radiofrequency losses; rotational mechanisms; soft magnetic materials; spinel ferrite comparison; sputter deposited layers; Amorphous magnetic materials; Composite materials; Core loss; Ferrites; Magnetic analysis; Magnetic field measurement; Magnetic materials; Permeability measurement; Radio frequency; Soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802428

Filename

1042481