Patent ID: 7763094

Claim:
A method of manufacturing a high frequency magnetic material, comprising: preparing a precursor particle having a particle size of 10 nm or more and 1 μm or less, and comprising a first compound selected from an alkoxide, a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of a magnetic metal containing at least one metal of Fe and Co, and a second compound selected from an alkoxide, a hydroxide, a sulfate, a nitrate, a carbonate, or a carboxylate of a metal element for forming an oxide; and heating the precursor particle in a reducing atmosphere to form an insulating particle made of an oxide of the metal element by decomposing the second compound, and to precipitate a particle of the magnetic metal in the insulating particle at a particle size of 1 nm or more and 100 nm or less.