The coercive field of the partially crystallized amorphous alloy Fe40Ni40P14B6

Abstract

The influence of isothermal crystallization on the coercive field of the amorphous alloy Fe40Ni40P14B6 is investigated by combining magnetic measurements and transmission electron microscopy (TEM) observations. It is found, that the statistically distributed crystalline regions with barrel like shape and diameters up to some micrometers act as pinning centres for domain walls. In the early stage of crystallization the coercive field is mainly determined by the pinning of the domain walls in the amorphous phase at statistically distributed crystallites. With increasing degree of crystallization the coercive field of the alloy is determined by the coercive fields of the different crystalline phases.

Effect of B₂O₃ Fluxing on Glass-Forming Ability and Soft Magnetic Properties of Fe(-Co)-B-Si-Nb Bulk Metallic Glasses

“…Furthermore, it was confirmed that the difference in these magnetic properties is not due to magnetic field-induced anisotropy [9]. The reason probably is to eliminate the nonmetallic inclusion by the B 2 O 3 fluxing because H c should be proportional to the volume fraction of the inclusions act as the pinning sites of magnetic domain-wall displacements [10].…”