Accession Number : ADP006642

Title :   Ferroelectric PbZr0.2Ti0.803 Thin Films on Epitaxial Y-Ba-Cu-O,

Corporate Author : RADIANT TECHNOLOGIES ALBUQUERQUE NM

Personal Author(s) : Ramesh, R. ; Inam, A. ; Chan, W.K. ; Wilkens, B. ; Tillerot, F.

Report Date : 05 APR 1991

Pagination or Media Count : 8

Abstract : Using a combination of pulsed laser deposition and sol-gel processing, we have fabricated epitaxial PbZr0.2Ti0.8O3/YBa2Cu3O7-x heterostructures on single crystalline 001 LaAlO3. Rutherford back-scattering studies show the composition to be the same as the nominal starting composition. Transmission electron microscopy shows the existence of a randomly oriented polycrystalline microstructure in the PZT layer with a grain size of about 500-1000A. Microscopic pores were also observed in the PZT layer. The PZT film exhibits ferroelectric hysteresis with a saturation polarization of 22-25 micron C/cm2 (at 7.5V, lkHz), a remanence of 5-6 micro C/cm2 and a coercive field of about 40kV/cm.

Descriptors :   *DEPOSITION, *FERROELECTRIC MATERIALS, *FABRICATION, ELECTRON MICROSCOPY, ELECTRONS, FILMS, GELS, GRAIN SIZE, HYSTERESIS, LASERS, LAYERS, MICROSCOPY, MICROSTRUCTURE, POLARIZATION, POLYCRYSTALLINE, PROCESSING, PULSED LASERS, SATURATION, SCATTERING, LIGHT PULSES, EPITAXIAL GROWTH, LEAD TITANATES, ZIRCONATES.

Subject Categories : Electricity and Magnetism
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE