Domain dynamics in epitaxial $Pb(Zr0.2Ti0.8)O3$ films studied by piezoelectric force microscopy Available to Purchase

Ferroelastic 90° $a$-domain dynamics in epitaxial $Pb(Zr0.2Ti0.8)O3$ (lead zirconium titanate, PZT) films is investigated using lateral and vertical piezoelectric force microscopies. The PZT film consists of out-of-plane polarized $c$-domains separated by a cross-hatch network of in-plane polarized $a$-domains. When an electric field is applied across the PZT film, the $a$-domains are rearranged on the nanoscale. Depending on the direction of the electric field, this results either in larger or more fragmented $c$-domains. Both lateral and vertical piezoelectric force signals demonstrate the importance of ferroelastic $a$-domain movement since their dynamics will determine the final polarization retention time and stability of ferroelectric capacitors.