Figure 4
Strain mapping of the KNN/STO interface.
(a) The atomic-resolution HAADF image of KNN/STO interface without dislocations; (b–d) the GPA Exx (in-plane strain), Eyy (out-of-plane strain) and Exy (shear strain) maps of (a), respectively; (e) the atomic-resolution HAADF image of KNN/STO interface with a dislocation; (f–h) the GPA relative a, c-lattice strain and shear strain maps of (e), respectively. The positive and negative values of E indicate the measured local lattice is larger and smaller than the reference lattice, respectively.
