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We report on nanoscale experiments with <100nm lateral resolution being able to differentiate the effective dielectric polarisation P z , deposited charge density σ, surface dielectric constant ε surface , its voltage dependence ε surface (U), as well as the built-in electric bias voltage U int in ferroelectric lead zirconate titanate (PZT) thin films. This is possible...
Polarization switching in scanning force microscopy (SFM) is influenced by both electric fields and stress, whereby the latter can arise inherently from Maxwell stress. We discuss the influence of electric charges and of the polarization asymmetry on the switching behaviour. For single crystallites of PZT(53/47) thin films, the sectors for ferroelectric, ferroelastoelectric and ferroelastic switching...
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