Title :
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
fDate :
9/1/2002 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802428
