Figure 2

The structures and strain maps for dislocation cores in 0.19N. (a1-c1) LAADF-STEM images of edge-dislocation, SF and LCD, respectively. White dotted and solid lines are the Burgers circuits around the dislocation cores of extra-half planes and partial-dislocations, respectively, where red arrows exhibit the lattice imperfections, which correspond to Burgers vectors. The red dotted arrows indicate the core location. (a2–c2) Thompson’s tetrahedra used for determination of the Burgers vectors of edge-dislocation, partial-dislocation and LCD, respectively. (a3–c3) Strain maps by GPA analysis for edge-dislocation, partial-dislocation and LCD, respectively. The x directions are predefined as [\(21\overline{1 }\)] for all types of dislocations.