Direct Observation of Polarization vs. Thickness Relation in Ultra-Thin Ferroelectric Films

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

A reduction of polarization in ultra-thin ferroelectric films appears to be fundamental to ferroelectricity at the nanoscale. For the model system PbTiO3 on SrTiO3, we report observation of the polarization vs. thickness relation. Distinct periodicity changes of ferroelectric domains obtained from x-ray diffraction and total energy calculations reveal a linear lowering of the polarization below a critical thickness of ~12 nm. Independent polarization and tetragonality measurements provide insight into the fundamental relation between polarization and tetragonality in nanoscale ferroelectrics.
7 pages, 5 figures

Keywords

Materials Science

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/127591

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0704.2441
 http://arxiv.org/abs/0704.2441

Collections

arXiv