Metal magnetic particle, inductor, method for manufacturing metal magnetic particle, and method for manufacturing metal magnetic core

A method for manufacturing a metal magnetic core, the method comprising:

• mixing raw material particles each of which has, on a surface of an alloy particle containing Fe and Si, a Si oxide film and an Fe oxide film from a side of the alloy particle with Si alkoxide and alcohol;
• forming coating film forming particles each of which is formed with a coating film containing silicon oxide, by hydrolyzing and drying the Si alkoxide;
• molding the coating film forming particles;
• and
• forming an oxide layer on a surface of each of the alloy particles by performing heat treatment on a molded body of the coating film forming particles in an oxidizing atmosphere, wherein
• an average thickness of the coating film is from 10 nm to 14 nm,
• in the oxide layer, a layer in which Fe content takes a local maximum value is formed over a layer in which Si content takes a local maximum value and the layer in which Fe content takes the local maximum value also includes Si, and
• in the layer in which Si content takes the local maximum value, Si content is greater than Fe content at a point where Si content takes the local maximum value.