Magnetic hysteresis minor loops in Fe single crystal

摘要: Magnetic hysteresis minor loops were measured with step by increase of the magnetic field amplitude, Ha, in plastically deformed Fe single crystal. In order to analyse connection lattice defects, we defined some parameters, such as pseudo-coercive force, Hc*, and differential susceptibility under force χH*. for instance, is where magnetization becomes zero loops. this work, found relationship 2Hc* = Ha hold over a fairly wide range. These parameters are important representing Bloch wall displacement potential energy. The remarkably sensitive defects range below coercive Hc. relation 1/χH* Hc* shows better sensitivity—90 times higher than that Hc—for revealing information on dislocations. loop measurement, getting full dislocations it sufficient have 400 A m−1.