Controlling polarization direction in epitaxial Pb(Zr_0.2Ti_0.8)O₃ films through Nb (n-type) and Fe (p-type) doping.

ABSTRACT: Fe (acceptor) and Nb (donor) doped epitaxial Pb(Zr_0.2Ti_0.8)O₃ (PZT) films were grown on single crystal SrTiO₃ substrates and their electric properties were compared to those of un-doped PZT layers deposited in similar conditions. All the films were grown from targets produced from high purity precursor oxides and the doping was in the limit of 1% atomic in both cases. The remnant polarization, the coercive field and the potential barriers at electrode interfaces are different, with lowest values for Fe doping and highest values for Nb doping, with un-doped PZT in between. The dielectric constant is larger in the doped films, while the effective density of charge carriers is of the same order of magnitude. An interesting result was obtained from p

SUBMITTER: Chirila CF 

PROVIDER: S-EPMC8760319 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature