Realization of anisotropic nanocomposite magnet in Nd2Fe14B/-Fe thin films

Abstract A series of Nd 2 Fe 14 B/ α -Fe nanocomposite thin films, in which the crystallites of the Nd 2 Fe 14 B phase are well-oriented, has been synthesized by RF magnetron sputtering onto heated glass substrates. Magnetization curves exhibited single-phase-like hysteresis loops, suggesting that the two phases are firmly exchange-coupled. By comparing the observed magnetization curves with the micromagnetic calculations, we have estimated the intergrain exchange-coupling constants.