Stabilization of Monodomain Polarization in Ultrathin PbTiO3 Films

Abstract

Using in situ high-resolution synchrotron x-ray scattering, the Curie temperature TC has been determined for ultrathin c-axis epitaxial PbTiO3 films on conducting substrates (SrRuO3 on SrTiO3), with surfaces exposed to a controlled vapor environment. The suppression of TC was relatively small, even for the thinnest film (1.2 nm). We observe that 180 stripe domains do not form, indicating that the depolarizing field is compensated by free charge at both interfaces. This is confirmed by ab initio calculations that find polar ground states in the presence of ionic adsorbates.

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Document Details

Document Type
Technical Report
Publication Date
Mar 28, 2006
Accession Number
ADA631231

Entities

People

  • A. M. Kolpak
  • A. M. Rappe
  • C. B. Eom
  • Carol Thompson
  • D. D. Fong
  • D. M. Kim
  • G. B. Stephenson
  • I. Grinberg
  • J. A. Eastman
  • K. J. Choi
  • P. H. Fuoss
  • S. K. Streiffer

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Chemical Vapor Deposition
  • Chemistry
  • Crystal Lattices
  • Curie Temperature
  • Density Functional Theory
  • Films
  • Ground State
  • Materials
  • Materials Science
  • Measurement
  • Phase Transformations
  • Polarization
  • Scattering
  • Thick Films
  • Transition Temperature
  • X Ray Scattering
  • X Rays

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Nanofabrication and Microfabrication.
  • Quantum Chemistry