Post-sinter annealing influences on coercivity of multi-main-phase Nd-Ce-Fe-B magnets

Nonlinear annealing temperature dependent coercivity for the MMP Nd-Ce-Fe-B magnet (a) due to the gradually homogenized RE distributions within the 2:14:1 phase grains (b and c) that offsets the positive contribution from the formation of continuous grain boundaries.225