Structural evidence for enhanced polarization in a commensurate short-period BaTiO 3/SrTiO 3 superlattice

W. Tian, J. C. Jiang, X. Q. Pan, J. H. Haeni, Y. L. Li, Long-qing Chen, D. G. Schlom, J. B. Neaton, K. M. Rabe, Q. X. Jia

Research output: Contribution to journalArticle

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Abstract

A short-period (BaTiO 3) 6/(SrTiO 3) 5 superlattice was characterized by x-ray diffraction and transmission electron microscopy. The superlattice is epitaxially oriented with the c axes of BaTiO 3 and SrTiO 3 normal to the (001) surface of the SrTiO 3 substrate. Despite the large in-plane lattice mismatch between BaTiO 3 and SrTiO 3 (∼2.2%), the superlattice interfaces were found to be nearly commensurate. The crystallographic c/a ratio of the superlattice was measured and the results agree quantitatively with first-principles calculations and phase-field modeling. The agreement supports the validity of the enhanced spontaneous polarization predicted for short-period BaTiO 3/SrTiO 3 superlattices.

Original languageEnglish (US)
Article number092905
JournalApplied Physics Letters
Volume89
Issue number9
DOIs
StatePublished - Sep 8 2006

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superlattices
x ray diffraction
transmission electron microscopy
polarization

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Tian, W. ; Jiang, J. C. ; Pan, X. Q. ; Haeni, J. H. ; Li, Y. L. ; Chen, Long-qing ; Schlom, D. G. ; Neaton, J. B. ; Rabe, K. M. ; Jia, Q. X. / Structural evidence for enhanced polarization in a commensurate short-period BaTiO 3/SrTiO 3 superlattice. In: Applied Physics Letters. 2006 ; Vol. 89, No. 9.
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abstract = "A short-period (BaTiO 3) 6/(SrTiO 3) 5 superlattice was characterized by x-ray diffraction and transmission electron microscopy. The superlattice is epitaxially oriented with the c axes of BaTiO 3 and SrTiO 3 normal to the (001) surface of the SrTiO 3 substrate. Despite the large in-plane lattice mismatch between BaTiO 3 and SrTiO 3 (∼2.2{\%}), the superlattice interfaces were found to be nearly commensurate. The crystallographic c/a ratio of the superlattice was measured and the results agree quantitatively with first-principles calculations and phase-field modeling. The agreement supports the validity of the enhanced spontaneous polarization predicted for short-period BaTiO 3/SrTiO 3 superlattices.",
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Tian, W, Jiang, JC, Pan, XQ, Haeni, JH, Li, YL, Chen, L, Schlom, DG, Neaton, JB, Rabe, KM & Jia, QX 2006, 'Structural evidence for enhanced polarization in a commensurate short-period BaTiO 3/SrTiO 3 superlattice', Applied Physics Letters, vol. 89, no. 9, 092905. https://doi.org/10.1063/1.2335367

Structural evidence for enhanced polarization in a commensurate short-period BaTiO 3/SrTiO 3 superlattice. / Tian, W.; Jiang, J. C.; Pan, X. Q.; Haeni, J. H.; Li, Y. L.; Chen, Long-qing; Schlom, D. G.; Neaton, J. B.; Rabe, K. M.; Jia, Q. X.

In: Applied Physics Letters, Vol. 89, No. 9, 092905, 08.09.2006.

Research output: Contribution to journalArticle

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AU - Tian, W.

AU - Jiang, J. C.

AU - Pan, X. Q.

AU - Haeni, J. H.

AU - Li, Y. L.

AU - Chen, Long-qing

AU - Schlom, D. G.

AU - Neaton, J. B.

AU - Rabe, K. M.

AU - Jia, Q. X.

PY - 2006/9/8

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N2 - A short-period (BaTiO 3) 6/(SrTiO 3) 5 superlattice was characterized by x-ray diffraction and transmission electron microscopy. The superlattice is epitaxially oriented with the c axes of BaTiO 3 and SrTiO 3 normal to the (001) surface of the SrTiO 3 substrate. Despite the large in-plane lattice mismatch between BaTiO 3 and SrTiO 3 (∼2.2%), the superlattice interfaces were found to be nearly commensurate. The crystallographic c/a ratio of the superlattice was measured and the results agree quantitatively with first-principles calculations and phase-field modeling. The agreement supports the validity of the enhanced spontaneous polarization predicted for short-period BaTiO 3/SrTiO 3 superlattices.

AB - A short-period (BaTiO 3) 6/(SrTiO 3) 5 superlattice was characterized by x-ray diffraction and transmission electron microscopy. The superlattice is epitaxially oriented with the c axes of BaTiO 3 and SrTiO 3 normal to the (001) surface of the SrTiO 3 substrate. Despite the large in-plane lattice mismatch between BaTiO 3 and SrTiO 3 (∼2.2%), the superlattice interfaces were found to be nearly commensurate. The crystallographic c/a ratio of the superlattice was measured and the results agree quantitatively with first-principles calculations and phase-field modeling. The agreement supports the validity of the enhanced spontaneous polarization predicted for short-period BaTiO 3/SrTiO 3 superlattices.

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