Magnetic base body, coil component provided with magnetic base body, circuit board provided with coil component, and electronic apparatus provided with circuit board

Abstract

Disclosed herein is a magnetic base body including a plurality of soft magnetic metal particles each containing Fe, and a plurality of insulation films that cover respective surfaces of the soft magnetic metal particles. The plurality of soft magnetic metal particles include a first soft magnetic metal particle, the plurality of insulation films include a first insulation film that covers a surface of the first soft magnetic metal particle, and the first insulation film is disposed between the first soft magnetic metal particle and a soft second magnetic metal particle that is adjacent to the first soft magnetic metal particle, and the first insulation film includes a first oxide region that is composed of mainly an amorphous Al oxide and a second oxide region that covers a portion of the surface of the first soft magnetic metal particle and that is composed of mainly an oxide of an element A.

Dependencies are inferred from the claim text.