Ferroelectricity in Ultrathin Perovskite Films
Top Cited Papers
- 11 June 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 304 (5677) , 1650-1653
- https://doi.org/10.1126/science.1098252
Abstract
Understanding the suppression of ferroelectricity in perovskite thin films is a fundamental issue that has remained unresolved for decades. We report a synchrotron x-ray study of lead titanate as a function of temperature and film thickness for films as thin as a single unit cell. At room temperature, the ferroelectric phase is stable for thicknesses down to 3 unit cells (1.2 nanometers). Our results imply that no thickness limit is imposed on practical devices by an intrinsic ferroelectric size effect.Keywords
This publication has 26 references indexed in Scilit:
- Pushing towards the digital storage limitNature Materials, 2004
- Impact of misfit dislocations on the polarization instability of epitaxial nanostructured ferroelectric perovskitesNature Materials, 2004
- Temperature and thickness dependent permittivity of (Ba,Sr)TiO3 thin filmsApplied Physics Letters, 2002
- Orienting Ferroelectric FilmsScience, 2002
- Ab initiostudy ofandsurfaces in external electric fieldsPhysical Review B, 2001
- The Properties of Ferroelectric Films at Small DimensionsAnnual Review of Materials Science, 2000
- Ferroelectric thin films for micro-sensors and actuators: a reviewJournal of Micromechanics and Microengineering, 2000
- Size effects on ferroelectricity of ultrafine particles of PbTiO3Journal of Applied Physics, 2000
- Theory of PbTiO3, BaTiO3, and SrTiO3 surfacesFaraday Discussions, 1999
- Domain formation in thin ferroelectric films: The role of depolarization energyFerroelectrics, 1997