Strain effect on coercive field of epitaxial barium titanate thin films

S. Choudhury, Y. L. Li, L. Q. Chen, Q. X. Jia

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Strain is generally known to increase the coercive field of a ferroelectric thin film as compared to a stress-free single crystal or a strain-relaxed film. We studied the coercive fields and remanent polarizations of (001)-oriented epitaxial barium titanate thin films using the phase-field approach. It is demonstrated, while the remanent polarization decreases as in-plane strain changes from being compressive to tensile, the variation of coercive field with strain is complicated. We noted more than two times drop in coercive field with a reduction of compressive strain of only ∼0.05%, which we attribute to the existence of multiple ferroelectric phases.

Original languageEnglish (US)
Article number142907
JournalApplied Physics Letters
Volume92
Issue number14
DOIs
StatePublished - Apr 21 2008

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barium
plane strain
polarization
thin films
single crystals

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Choudhury, S. ; Li, Y. L. ; Chen, L. Q. ; Jia, Q. X. / Strain effect on coercive field of epitaxial barium titanate thin films. In: Applied Physics Letters. 2008 ; Vol. 92, No. 14.
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Strain effect on coercive field of epitaxial barium titanate thin films. / Choudhury, S.; Li, Y. L.; Chen, L. Q.; Jia, Q. X.

In: Applied Physics Letters, Vol. 92, No. 14, 142907, 21.04.2008.

Research output: Contribution to journalArticle

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