Effects of spacer layers on magnetic properties and exchange couplings of Nd–Fe–B/Nd–Ce–Fe–B multilayer films Project supported by the Major State Basic Research Development Program of China (Grant No. 2014CB643701) and the General Program of the National Natural Science Foundation of China (Grant No. 51571064). |
(color online) Perpendicular hysteresis curves, observed at room temperature, for Si/Ta/NdFeB (100 nm)/Ta (x)/(NdCe)FeB(100 nm)/Ta(x)/NdFeB(100 nm)/Ta (x = 0, 2, 5, 10, and 20 nm) multilayer films deposited at 903 K with annealing at 948 K for 30 min. |