| Literature DB >> 15192223 |
Dillon D Fong1, G Brian Stephenson, Stephen K Streiffer, Jeffrey A Eastman, Orlando Auciello, Paul H Fuoss, Carol Thompson.
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.Entities:
Year: 2004 PMID： 15192223 DOI： 10.1126/science.1098252
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728