The influence of short time heat treatment on the structural and magnetic behaviour of Nd2Fe14B/α-Fe nanocomposite obtained by mechanical milling

► Nd2Fe14B/α-Fe nanocomposites obtained after 8 h of mechanical milling and annealing. ► XRD peaks restored during conventional (550 °C) or short time (700, 750 or 800 °C) annealing. ► Annealing at 700, 750 and 800 °C for 2.5, 1.5 and 1 min respectively give the better coercivity.