CORE-SHELL TYPE MAGNETIC PARTICLE, HIGH-FREQUENCY MAGNETIC MATERIAL AND MAGNETIC SHEET

摘要

PROBLEM TO BE SOLVED: To provide a core-shell type magnetic particle having high saturation magnetization which can suppress eddy-current loss at high frequencies and has a highly anisotropic magnetic field.

SOLUTION: A core-shell type magnetic particle includes a magnetic metal particle and an oxide coating layer formed on the surface of the magnetic metal particle. The magnetic metal particle contains a magnetic metal containing at least one selected from the group consisting of Fe, Co and Ni, a nonmagnetic metal and at least one element selected from carbon and nitrogen. The oxide coating layer is constituted of an oxide or a composite oxide containing the nonmagnetic metal which is one of the constituents of the magnetic metal particle.

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