Impact of 90°-Domain Wall Motion in Pb(Zr0.43Ti0.57)O3Film on the Ferroelectricity Induced by an Applied Electric Field

Using scanning X-ray microdiffraction with a 50 µmφ micro-beam and a newly developed two-dimensional detector, the crystal and domain structures were analyzed for a 2.4-µm-thick epitaxial Pb(Zr 0.43 Ti 0.57 )O 3 film directly underneath a 200 µmφ Pt top-electrode before and after applying an electric field. An obvious extrinsic 90°-domain rotation was observed and the volume fraction of c -domain was increased from ∼42 to ∼71% by an applied electric field over the coercive field. This phenomenon induced a large ferroelectric remanent polarization ( P r ∼60 µC/cm 2 ) which is an unforeseeable value from an as-grown state of Pb(Zr 0.43 Ti 0.57 )O 3 film.