Nanocrystalline and nanocomposite permanent magnets by melt spinning technique

Rong Chuanbing^{1, †}, Shen Baogen²

TEM bright field micrographs of (a) Nd_4.5Fe₇₇B_18.5, (b) Nd_4.5Fe_76.8B_18.5Cu_0.2, (c) Nd_4.5Fe B_18.5Cu_0.2Nb₁, and (d) Nd_4.5Fe₇₆B_18.5Nb₁ alloys annealed at 660 °C for 10 min. The average grain size is about 30, 17, 12, and 43 nm, respectively.^[212]