Magnetic behavior of PdFeMn on mesoscopic and macroscopic length scales

Abstract By 3D neutron depolarization (ND) the magnetization and the domain structure were observed for FC and ZFC samples of (Pd 0.9965 Fe 0.0035 ) 1− x Mn x with x =0.05, showing both an FM and a spin-glass-like transition, and x =0 being ferromagnetic. The evolution of the domain structure along the magnetization/demagnetization process — as seen by depolarization — is strongly asymmetric, with maximum change in the domain structure only after magnetization reversal (typical domain size δ ≈3 μm in the virgin state). Near T c , the alloy approached the behavior of FM PdFe, showing a symmetric change of domain structure on the applied field.