以Nd2 Fe14B/α - Fe/Nd2 Fe14B三层膜为对象,应用微磁学理论计算了该体系的磁滞回线,并对其磁性能与软磁层厚度的关系进行了分析.结果表明,当软磁层厚度小于临界尺寸(5nm)时,磁滞回线为矩形,三层膜完全耦合；当软磁层厚度为5nm时,最大磁能积可达到最大值642.51 kJ/m3.在所研究的软磁层厚度范围内,随着软磁层厚度的增加,三层膜矫顽力单调下降.
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