@article{33983,
  author = {Ramamoorthy Ramesh and A Inam and W.K Chan and B Wilkens and K Myers and K Remschnig and D.L Hart and J.M Tarascon},
  title = {Epitaxial cuprate superconductor/ferroelectric heterostructures},
  abstract = {Thin-film heterostructures of Bi4Ti3O 12/Bi2Sr2CuO6+x have been grown on single crystals of SrTiO3, LaAlO3, and MgAl 2O4 by pulsed laser deposition. X-ray diffraction studies show the presence of c-axis orientation only; Rutherford backscattering experiments show the composition to be close to the nominal stoichiometry. The films are ferroelectric and exhibit a symmetric hysteresis loop. The remanent polarization was 1.0 microcoulomb per square centimeter, and the coercive field was 2.0 × 105 volts per centimeter. Similar results were obtained with YBa2Cu3O7-x and Bi 2Sr2CaCu2O8+x, and single-crystal Bi2Sr2CuO6+x as the bottom electrodes. These films look promising for use as novel, lattice-matched, epitaxial ferroelectronic film/electrode heterostructures in nonvolatile memory applications.},
  year = {1991},
  journal = {Science},
  volume = {252},
  number = {5008},
  pages = {944-946},
  issn = {00368075},
  doi = {10.1126/science.252.5008.944},
  note = {cited By 190},
  language = {eng},
}