Patent ID: 11955261
Assignee: TDK CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A magnetic alloy ribbon comprising Fe,
wherein a specific depth at which a concentration of Fe reaches 10 at % is 18 nm or more and 500 nm or less from a first surface of the ribbon,
from the first surface to the specific depth, the concentration of Fe is less than 10 at %,
a positive increase region is present in which the concentration of Fe increases in a case where the concentration of Fe is measured in a depth direction from the first surface, and
at a depth closer to the first surface than the positive increase region, a low Fe concentration region having a concentration of Fe of 0.5 at % or less is continuous at a depth of 10 nm or more.