Observation of Buried Magnetic Domains in Grain-Oriented Electrical Steel

Bulk-sensitive microscopic measurements of buried magnetic domains are reported. Utilizing a new magneto-optical effect in the hard X-ray regime, referred to as X-ray magnetic circularly polarized emission (XMCPE), the internal transverse domains in a grain-oriented (GO) electrical steel sheet are unambiguously observed. This allows the lateral shapes of the transverse domains to be successfully visualized. In addition, we discuss the magnetic domain structure of the supplementary domains below the surface from measurements performed at several pairs of incident and exit angles.

Automated summary

Bulk-sensitive microscopic measurements of buried magnetic domains are conducted using a new magneto-optical effect known as X-ray magnetic circularly polarized emission (XMCPE) in the hard X-ray regime. The study focuses on the internal transverse domains in a grain-oriented electrical steel sheet and successfully visualizes their lateral shapes. Additionally, the magnetic domain structure of supplementary domains below the surface is analyzed through measurements at different incident and exit angles.