Magnetic properties of [NdFeBx/Nbz]n multilayer films

This article presents the systemic relationship between microstructure and magnetic properties of NdFeB single layer and [NdFeBx/Nbz]n multiplayer films. Temperature dependence on coercivity was fitted to a modified nucleation model to study the magnetization reversal process of films. The microstructure parameters (αK) determined the deteriorating effect of the microstructure on coercivity. The highest values of the single- and multilayer films were 0.46 and 0.69, respectively. It proved that the Nb spacer layer improved the grain boundary of the Nd2Fe14B matrix effectively.