Magnetization/demagnetization process in FeNiMn observed by neutron depolarization

Abstract

By three-dimensional neutron depolarization analysis, the macroscopic magnetization, the magnetic cluster/domain size and texture were simultaneously observed in (Fe 0.65Ni 0.35) 0.89Mn 0.11. The changes in the domain structure indicated that the initial magnetization is due to domain wall motion in the soft ferromagnetic phase, whereas rotation processes were essential for initial magnetization in the re-entrant spin glass phase. In this phase, the domains retained a preferred orientation during magnetization reversal.