| 摘要 |
PROBLEM TO BE SOLVED: To provide an Fe-containing ferromagnetic material having, locally, a part in which saturation magnetic flux density is lower than that of the other part. SOLUTION: The Fe-containing ferromagnetic material has: first parts 3 existing in a plurality of places; and second parts 5 each connecting the adjacent first parts 3 to each other. Each of the second parts 5 partly contains nitrogen in a concentration higher than nitrogen concentration in the first parts and also has a region where saturation magnetic flux density is lower than that of the first parts. |
