Multi-magnetic phase behaviour of the Nd60Fe30Al10 amorphous hard magnetic alloy

Abstract The Nd 60 Fe 30 Al 10 alloy prepared at slow cooling rate is partly amorphous, while that obtained at quenching rate of 30 m/s is fully amorphous. All samples contain two main phases: one hard magnetic phase ordering above room temperature and a soft one ordering at about 50 K. The hard phase has an intrinsic coercivity as high as 8 T at 4 K and is supposedly originated from a cluster amorphous or ill-crystallized state. Besides, there is a minor magnetically soft phase ordering at about 260 K in the slowly cooled samples and about 250 K in the 30 m/s melt-spun sample.