Structural and magnetic properties of nanocomposite alloy Nd4.5Fe76.3Ga0.2Co1.0B18

Morphological alloy of Nd4.5Fe76.3Ga0.2Co1.0B18 prepared by rapid quenching was crystallized to obtain the nanocrystalline permanent magnetic material s in which Fe3B and Nd2Fe14B were the dominant phases. The X-ray diffractio n method, the transmission electron microscopy technique and magnetic measu rement were used to analyze the microstructure and magnetic properties of t he nanocomposite materials. The relationship of the microstructure, the mag netic properties with the exchange coupling interaction between crystallite s was studied by determining the delta M curve of the nanocomposite magnets .