A study on the phase transformation and exchange-coupling of (Nd_(0.95)La_(0.05))_(9.5)Fe_(bal)Co_5Nb_2B_(10.5) nanocomposites

摘要

The phase transformation and the exchange coupling in (Nd_(0.95)La_(0.05))_(9.5)Fe_(bal)Co_5Nb_2B_(10.5) have been investigated. Nanocomposites were obtained by treating amorphous precursors at temperatures ranging from 650 deg C to 950 deg C for 10 minutes. The magnetic properties were characterized via the vibrating sample magnetometer (VSM). X-ray diffraction (XRD), thermomagnetic analysis (TMA), and transmission electron microscopy (TEM) were used to perform phase identification, measure grain size, and analyze phase distribution. The strength of the exchange coupling between the magnetically hard and soft phases in the corresponding nanocomposite was analyzed via the triangle openM-versus-H plot.