fig3

Figure 3. Microstructure of the 5Tb alloy. (A) The morphology of the 5Tb alloy was measured by scanning electron microscope (SEM) in the TD (transverse direction) - ND (normal direction) plane. (B) The enlarged region in (A) is marked by a dotted rectangle. (C and D) Element mappings of Fe (C) and Tb (D) corresponding to the region shown in (B). (E) Electron backscattered diffraction (EBSD) inverse pole figures of crystal orientation for the 5Tb alloy in the TD-ND plane. (F) EBSD phase figure for the 5Tb alloy. (G and H) Temperature-dependent synchrotron X-ray diffraction for 5Tb. (I) Lattice thermal expansions of H in the a and c axes, α in the a axis. L(a) and L(c) represent the average “lattice length” of the two phases in the LD and TD-ND plane, respectively.