Magnetic domain observations in Fe–Ga alloys

Experimental exploration of the origin of magnetostriction in single crystalline iron

“…24 Even though the Fe-Ga alloys of interest involve structural changes driven by chemical ordering, there is no relationship between the underlying microstructure and magnetic domains. 25,26 Short-range order ͑SRO͒, thought to be a precipitation precursor of long range chemically ordered precipitate, has little effect on the magnetostriction. 27 Together, these experimental results suggest the origin of magnetostriction in these alloys is intrinsic.…”

Origin of magnetostriction in Fe–Ga

“…In another work, 13 using magnetic force and Kerr microscopes, we show that mazelike domain patterns appear due to insufficient polishing, and when polished the 09A957-2right way, the "true" domains appear. Here, we used Kerr microscope with longitudinal sensitivity and oblique incidence to image the magnetic domains.…”

Magnetic domain characterisation of duplex stainless steel after different treatments

“…Very recently, however, Mudivarthi et al [17] discovered that the maze-like structure in Ga-Fe alloys is in fact an artefact produced by sample grinding operation. The residual stress introduced into the sample surface layer will alter the domain structure [17,18].…”

“…Very recently, however, Mudivarthi et al [17] discovered that the maze-like structure in Ga-Fe alloys is in fact an artefact produced by sample grinding operation. The residual stress introduced into the sample surface layer will alter the domain structure [17,18]. The maze-like structure in Fe-Ga alloys will completely vanish if electropolishing or a careful polishing using colloidal amorphous silica is employed to etch away the surface layer [17].…”