COMPOUND MAGNETIC PARTICLE AND COMPOUND MAGNETIC COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a compound magnetic material compatible with both high magnetic permeability and low eddy current loss in a high frequency band.

SOLUTION: In a compound magnetic particle, the surface of metal magnetic particle is covered with a metal material film, and the metal material film is covered with an oxide magnetic material film. The compound magnetic particle has such characteristics that (a) Fe ratio of the metal magnetic particle is 25 wt.% or more, (b) the metal material is Ni-Fe alloy whose Ni or Ni ratio is 70 wt.% or more, and (c) the thickness of metal material film is 10-100 nm.

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