Figure 2From: Nucleation mechanism of nano-sized NaZn13-type and α-(Fe,Si) phases in La-Fe-Si alloys during rapid solidification Cross-sectional SEM images. Cross-sectional SEM images of a melt-spun La-Fe-Si ribbon (a) with different magnifications (b,c). There exist three different regions: region A (the cooled surface), region B (the free surface), and a transitional region between A and B.Back to article page