Figure 1
The room temperature XRD patterns, SEM, and simulated results using the classical nucleation theory. (a) XRD patterns of both the cooled and free surfaces of a melt-spun La-Fe-Si ribbon; (b) nucleation rates of α-(Fe,Si) and La(Fe,Si)13 phases versus La-Fe-Si alloy; and (c) a cross-sectional SEM image of the ribbon indicating the microstructural difference between the cooled surface region (region A) and the free surface region (region B).