Abstract: Nano-crystallization of amorphous alloy Co60.15Fe4.35Si12.5B15 can be realized with the process of low-frequency pulsating magnetic field. In the process of crystallization, temperature rising is less than 5 ℃, which can prevent efficiently material from getting fragile and obtain the nano-crystallization soft magnetic properties superior to routine isothermal annealing. The larger GMI effect was observed in the experiment, and the best driving frequency is 2 MHz and the transverse anisotropy field is 0.9 kA/m.

Key words: Amorphous alloy, Nano-crystallization, Pulsating magnetic field

摘要： 采用低频脉冲磁场致Co60.15Fe4.35Si12.5B15非晶合金纳米晶化，晶化过程温升小于5 ℃，有效避免了材料变脆，获得了优于常规等温退火的纳米晶软磁性能。从实验中观察到较大的GMI效应，且最佳驱动电流频率为2 MHz，横向磁各向异性场为0.9 kA/m。

关键词: 非晶合金, 纳米晶化, 脉冲磁场