Fig. 3: Nanoscale phase distribution in high and low coercivity regions of sample A. | Nature Communications

Fig. 3: Nanoscale phase distribution in high and low coercivity regions of sample A.

From: Identifying grain boundary and intragranular pinning centres in Sm2(Co,Fe,Cu,Zr)17 permanent magnets to guide performance optimisation

Fig. 3

BF-TEM images of magnet A (a) low- and (b) high-Hc regions with corresponding electron diffraction patters (a1–a3) and (b1–b3), respectively) taken in [110] zone axis of the 2:17 phase. White colour indices are used for 2:17 R and blue colour indices for 2:17 R twins, respectively. Yellow circled reflections belong to the 2:17 R’ phase and Z-platelets are indicated with green arrows. The normalized intensity profile along c-direction (c) outlines the higher amounts of 2:17 R’ phase and Z-platelet phase in the low-Hc region. d HRTEM image from the high coercivity area showing the presence of 2:17 R’ phase in the nanostructure. (d1) is FFT image of (d), and (d2) is inverse FFT image of (c), filtering only reflections of 2:17 R’ phase.

Back to article page