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 $Pb(Zr0.52Ti0.48)O3$ (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 $400–2500nm$⁠. 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.