“…In our previous studies [17,18], magnetic properties of B r = 6.5 kG, i H c = 10.3 kOe, and (BH) max = 8.7 MGOe were obtained for directly quenched Nd 9.5 Fe 72.5 Ti 3 B 15 magnets with a diameter of 0.7 mm and a length of 15 mm. However, increasing the diameter of the magnet to 0.9 mm degraded the magnetic properties to B r = 6.0 kG, i H c = 6.2 kOe, and (BH) max = 5.6 MGOe, because the grain size becomes coarser and the size distribution turns out to be inhomogeneous in the magnet due to its slower cooling rate.…”