Figure 5
From: Atomic-scale mapping of dipole frustration at 90° charged domain walls in ferroelectric PbTiO3 films
Quantitative analysis of the structural and electric parameters of the 90° NCDW and 90° UCDWs.
(a)–(d) Lattice parameters, tetragonality, δTi and Ps extracted from the rhombus-highlighted area marked with ‘1’ in Fig. 4a. (e)–(h) Lattice parameters, tetragonality, δTi and Ps extracted from a 90° UCDW near the PTO/STO interface (the rhombus-highlighted area in Fig. 4b). (i)–(l) Lattice parameters, tetragonality, δTi and Ps extracted from the rhombus-highlighted area marked with ‘2’ in Fig. 4a. (m)–(p) Lattice parameters, tetragonality, δTi and Ps extracted from the rhombus-highlighted area marked with ‘3’ in Fig. 4a. The error bars show the standard deviation with respect to averaging along {110}PTO for each {110} atomic row. Note that the 90° UCDWs near the PTO/STO interface and away from the interface share the same characteristics of a sharp jump of structural and electric behaviors. In contrast, the structural and electric parameters of the lower 90° NCDW near the interface are remarkably different from those away from the interface.
