Firstly, in two sorts of samples of different nominal composition, the relationship between the formation of the hard domains with the amplitude of bias field and pulse field, the width of pulse field, are investigated by series of pulse low-bias field.

• 本文首先采用系列脉冲“低偏场法”，在两类不同标称成分的样品上，研究了直流偏场、脉冲偏场以及脉冲宽度的大小对硬磁畴形成的影响；