Method for manufacturing metal magnetic particles, inductors, metal magnetic particles, and method for manufacturing metal magnetic cores

摘要

PROBLEM TO BE SOLVED: To obtain metal magnetic particles and inductors having excellent insulating properties and DC superimposition characteristics, metal magnetic particles capable of obtaining metal magnetic particles having excellent insulating properties and DC superimposing characteristics, and insulating properties and DC superimposing characteristics. Provided is a method for producing a metal magnetic core capable of obtaining an excellent metal magnetic core. SOLUTION: A metal magnetic particle 1 is provided with an oxide layer on the surface of an alloy particle 10 containing Fe and Si. The oxide layer has a first oxide layer 20, a second oxide layer 30, a third oxide layer 40, and a fourth oxide layer 50 from the alloy particle side, and is a scanning transmission electron microscope-energy dispersion type X. In the line analysis of the element content using the line analysis, the first oxide layer 20 is a layer having a maximum Si content, and the second oxide layer 30 is a layer having a maximum Fe content. The third oxide layer 40 is a layer having a maximum amount of Si, and the fourth oxide layer 50 is a layer having a maximum amount of Fe. [Selection diagram] Fig. 1