DUST CORE

摘要

PROBLEM TO BE SOLVED: To provide a dust core high in magnetic permeability in a high frequency band and excellent in DC superposition characteristics. SOLUTION: The dust core is formed by aligning magnetization easy axes of metal magnetic particles covered with an insulator perpendicularly to a magnetic path, and compression molding them. The thickness of the insulating film in a direction perpendicular to the magnetic path on the surface of the metal magnetic particles is thicker than that of the insulating film in the direction of the magnetic path. COPYRIGHT: (C)2006,JPO&NCIPI