Barkhausen Effect. III. Nature of Change of Magnetization in Elementary Domains

Abstract

Transverse Barkhausen effect. It is found that the small sudden changes in magnetic moment which take place when material is magnetized, have components perpendicular as well as parallel to the direction of the magnetic field. Quantitative measurements of the transverse and longitudinal effects (changes in moment perpendicular and parallel to the direction of the field) show that the longitudinal effect is the larger when the magnetization is small and that the transverse effect is larger when the magnetization is large. Materials examined are (polycrystalline) annealed iron, hard-worked iron, and perminvar.