Direct observation of rotational switching in polycrystalline ferrite materials

Abstract

The high-field switching mechanism of polycrystalline ferrite material is investigated. Direct experimental evidence for rotational switching is obtained by observing the charges in the longitudinal and transverse components of the magnetization, for a long (L=1.33 cm), thin-walled (o.d.=0.05 cm, i.d.=0.028 cm) ferrite tube, during the reversal process. For a 10-Oe circumferential pulse field in the presence of a 4.3-Oe longitudinal bias field, it is found that at least 30 of the total magnetization reverses by a rotational process. © 1963 The American Institute of Physics.