Studies of Local Induced Polarization in Modified Ferroelectric Thin Films

Composition-structure-properties relationships were studied in iron doped compositions of lead zirconate titanate using dielectric spectroscopy and atomic force microscopy. Samples under investigation were sol-gel deposited lead zirconate titanate PbZr 0,50 Ti 0,50 O 3 (PZT) family thin films and heterostructures on Si/SiO 2 /Ti/Pt substrates. Spatially resolved piezoresponse imaging of poled regions and polarization switching response in various granular regions polar ferroelectric thin films was studied using atomic force microscope operating in modified multi-pass regimes combining voltage lithography mode with immediate testing of local surface piezoresponse profiles.