| 摘要 |
A soft magnetic alloy that in an FeCo nanocrystal soft magnetic material, exhibits a high saturation magnetic flux density of 1.85 T or more, and that ensures prolonged nozzle life and easy ribbon production; an amorphous alloy ribbon for use in production thereof; and magnetic parts utilizing the soft magnetic alloy. The soft magnetic alloy has the composition of the formula Fe 100-x-y-a Co a Cu x B y (in the formula, x, y and a each represent atomic% and satisfy the relationships 1 < x ‰¦ 3, 10 ‰¦ y ‰¦ 20 and 10 < a < 25). At least part of the structure thereof consists of a crystal phase of 60 nm or less (not including 0) crystal grain diameter. The soft magnetic alloy has a saturation magnetic flux density of 1.85 T or more and a coercive force of 200 A/m or less. |
