A ferroelectric capacitor structure having a lattice matched lanthanide oxide film intervening layer for providing a high polarization state. The capacitor structure includes a glass substrate, a transparent electrode layer disposed on the glass substrate, a lanthanide oxide film disposed on the transparent layer and a ferroelectric perovskite layer disposed on the lanthanide oxide film. The claim also encompases semi-transparent applications where one conductive electrode (top or bottom) is not transparent.
 The United States Government has certain rights in this invention pursuant to Contract No. DE-AC02-06 CHI 1357 between the U.S. Department of Energy and UChicago Argonne, LLC as operator of Argonne National Laboratory.