Phase stability of heteroepitaxial polydomain BaTiO3 thin films

A. L. Meier, A. Y. Desai, L. Wang, T. J. Marks, B. W. Wessels

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The phase stability of ferroelectric, epitaxial, polydomain BaTiO3 thin films was examined using temperature-dependent x-ray diffraction (XRD) and in-plane electronic polarization measurements. The epitaxial BaTiO3 thin films were grown on MgO(100) substrates by a metal-organic chemical vapor deposition process. As-deposited and annealed BaTiO3 thin films with different domain structures were examined. Temperature-dependent plane-normal XRD analysis reveals well-defined phase transitions at 140 and 169 °C in the c- and a-oriented films, respectively. The measured Curie temperatures are consistent with those predicted by Landau-Ginsburg-Devonshire theory as applied to polydomain BaTiO3 thin films. Temperature-dependent in-plane electronic polarization measurements confirm that the 140 °C Curie temperature observed in the c-oriented film is a well-defined second-order paraelectric-ferroelectric transition.

Original languageEnglish
Pages (from-to)1384-1389
Number of pages6
JournalJournal of Materials Research
Volume22
Issue number5
DOIs
Publication statusPublished - May 2007

Fingerprint

Phase stability
Thin films
Curie temperature
thin films
Ferroelectric materials
x ray diffraction
Diffraction
Polarization
Organic Chemicals
X rays
Epitaxial films
Organic chemicals
polarization
electronics
Temperature
metalorganic chemical vapor deposition
temperature
Chemical vapor deposition
Phase transitions
Metals

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Phase stability of heteroepitaxial polydomain BaTiO3 thin films. / Meier, A. L.; Desai, A. Y.; Wang, L.; Marks, T. J.; Wessels, B. W.

In: Journal of Materials Research, Vol. 22, No. 5, 05.2007, p. 1384-1389.

Research output: Contribution to journalArticle

Meier, A. L. ; Desai, A. Y. ; Wang, L. ; Marks, T. J. ; Wessels, B. W. / Phase stability of heteroepitaxial polydomain BaTiO3 thin films. In: Journal of Materials Research. 2007 ; Vol. 22, No. 5. pp. 1384-1389.
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