Interfacial coherency and ferroelectricity of BaTi O3 SrTi O3 superlattice films

Y. L. Li, S. Y. Hu, D. Tenne, A. Soukiassian, D. G. Schlom, Long-qing Chen, X. X. Xi, K. J. Choi, C. B. Eom, A. Saxena, T. Lookman, Q. X. Jia

Research output: Contribution to journalArticle

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Abstract

We studied the phase transitions, domain morphologies, and polarizations in BaTi O3 SrTi O3 superlattices grown on SrTi O3 substrates. Using the phase field approach, we discovered the remarkable influence of film/substrate interfacial coherency on the ferroelectricity of the SrTi O3 layers within a superlattice: it is an orthorhombic ferroelectric for an incoherent interface while it exhibits only induced polarization by the adjacent BaTi O3 layers for a coherent interface. We presented the domain morphologies within individual BaTi O3 and SrTi O3 layers which have different ferroelectric symmetries. The results are compared to ultraviolet Raman spectroscopy and variable temperature x-ray diffraction measurements.

Original languageEnglish (US)
Article number252904
JournalApplied Physics Letters
Volume91
Issue number25
DOIs
StatePublished - Dec 1 2007

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ferroelectricity
ultraviolet spectroscopy
polarization
superlattices
x ray diffraction
Raman spectroscopy
symmetry
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Li, Y. L., Hu, S. Y., Tenne, D., Soukiassian, A., Schlom, D. G., Chen, L., ... Jia, Q. X. (2007). Interfacial coherency and ferroelectricity of BaTi O3 SrTi O3 superlattice films. Applied Physics Letters, 91(25), [252904]. https://doi.org/10.1063/1.2823608
Li, Y. L. ; Hu, S. Y. ; Tenne, D. ; Soukiassian, A. ; Schlom, D. G. ; Chen, Long-qing ; Xi, X. X. ; Choi, K. J. ; Eom, C. B. ; Saxena, A. ; Lookman, T. ; Jia, Q. X. / Interfacial coherency and ferroelectricity of BaTi O3 SrTi O3 superlattice films. In: Applied Physics Letters. 2007 ; Vol. 91, No. 25.
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Li, YL, Hu, SY, Tenne, D, Soukiassian, A, Schlom, DG, Chen, L, Xi, XX, Choi, KJ, Eom, CB, Saxena, A, Lookman, T & Jia, QX 2007, 'Interfacial coherency and ferroelectricity of BaTi O3 SrTi O3 superlattice films', Applied Physics Letters, vol. 91, no. 25, 252904. https://doi.org/10.1063/1.2823608

Interfacial coherency and ferroelectricity of BaTi O3 SrTi O3 superlattice films. / Li, Y. L.; Hu, S. Y.; Tenne, D.; Soukiassian, A.; Schlom, D. G.; Chen, Long-qing; Xi, X. X.; Choi, K. J.; Eom, C. B.; Saxena, A.; Lookman, T.; Jia, Q. X.

In: Applied Physics Letters, Vol. 91, No. 25, 252904, 01.12.2007.

Research output: Contribution to journalArticle

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AU - Li, Y. L.

AU - Hu, S. Y.

AU - Tenne, D.

AU - Soukiassian, A.

AU - Schlom, D. G.

AU - Chen, Long-qing

AU - Xi, X. X.

AU - Choi, K. J.

AU - Eom, C. B.

AU - Saxena, A.

AU - Lookman, T.

AU - Jia, Q. X.

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