Fig. 4From: The Growth of Polarization Domains in Ultrathin Ferroelectric Films Seeded by the Tip of an Atomic Force MicroscopeLogarithm of the average velocity of the domain wall, \(v_\mathrm{ave}\) (nm/s) versus r (nm), the lateral distance, on 2, 10 and 40 nm films using tip \(\#1\). The unit of \(v_\mathrm{ave}\) is nm/s, and the unit of r is nmBack to article page