Fabrication of epitaxial and transparent Pb(Zr0.52Ti0.48)O3 ferroelectric capacitors with La0.07Sr0.93SnO3 electrodes

Conductive and transparent La0.07Sr0.93SnO3 (LSSO) films were employed as electrodes for the fabrication of epitaxial Pb(Zr0.52Ti0.48)O-3 (PZT) ferroelectric capacitors. Due to a negligible lattice mismatch between LSSO and PZT, the LSSO/PZT/LSSO heterostructures grown on SrTiO3(001) substrates show excellent single-crystalline quality as revealed by high-resolution x-ray diffraction and are transparent with transmittance comparable to that of pure SrTiO3(001) substrates at the wavelength of 400-2500 nm. These capacitors show square polarization-electric field hysteresis loops but smaller polarization, larger coercive field, and especially poor fatigue resistance, in sharp contrast with those observed for the conventional epitaxial all-oxide PZT capacitors. (c) 2007 American Institute of Physics.