图7. {101?2}孪晶界的高分辨像^[70]

Fig.7. HRTEM images of {101?2} twin boundaries^[70] (white dashed lines outline the profile of twin boundary)
(a) twin boundary is approximately parallel to the {101?2} plane (1 points to a step parallel to the basal plane in twin)
(b) twin boundary is approximately perpendicular to the basal plane of the matrix (1 points to a step parallel to the basal plane in matrix. 2 points to a stacking fault in matrix)
(c) twin boundary with zig-zag shape (1 and 3 point to segments of the twin boundary parallel to basal plane in twin. 2 point to a segment approximately along the {101?2} plane. 4 points to a band-like boundary area with its width of about 2 nm)
(d, e) serrated twin boundaries exhibit considerable width of about 5~10 nm
(f) a band-like twin boundary with its width of about 15 nm