Domain wall induced anisotropy during annealing in amorphous ribbons

The domain wall stabilization caused by anisotropy induced during annealing has been studied in amorphous ribbons. It was found from domain observation that the regions where there existed domain walls during annealing tend to become nuclei of reverse domains as well as pinning sites of domain walls. The increased wall coercive force in Fe-Co based alloys shows parabolic dependence as a function of Fe-concentration. The anisotropy induced within the domain walls during high temperature annealing is expected to be a source of high coercive force. It is also shown that the ribbon with the domain wall induced anisotropy has potential application as a Wiegand type pulse generator.