Observation of large room-temperature coercivity in melt-spun Nd0.4Fe0.6

Abstract

An intrinsic room-temperature coercivity of 7.45 kOe has been found in melt-spun Nd0.4Fe0.6; this value is the largest ever reported for a rare-earth–iron alloy. A significant correlation was found between quench rate and coercivitiy, suggesting that the quenched alloys consist of fine crystallites or clusters, whose average particle size can be matched to the single-domain optimum by the appropriate quench rate.