| 摘要 |
PROBLEM TO BE SOLVED: To provide a soft magnetic powder which can simultaneously achieve decreased iron loss and improved magnetic properties when used as a magnetic core, a dust core produced by using the soft magnetic powder, and a magnetic device including the dust core.SOLUTION: A choke coil (magnetic device) 10 includes a ring (toroidal shape) dust core 11 and a conductive wire 12 wrapped around the dust core 11. Also, the dust core 11 is obtained by mixing a soft magnetic powder with a binder, delivering the obtained mixture into a molding die, and performing compression molding. Also, the soft magnetic powder is a powder including an amorphous alloy material, which has alloy composition represented by FeMnSiBC(each of a, b, c and d represents at%), and satisfies the relation: 0.1≤a≤10, 3≤b≤15, 3≤c≤15, and 0.1≤d≤3. |
