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Choi, Kyoung Jin
Energy Conversion Materials (EcoMAT) Lab
Research Interests
  • Solar cells, thermoelectrics, piezoelectric

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Prediction of ferroelectricity in BaTiO3/SrTiO3 superlattices with domains

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Title
Prediction of ferroelectricity in BaTiO3/SrTiO3 superlattices with domains
Author
Li, Y. LHu, S. Y.Tenne, D.Soukiassian, A.Schlom, D. G.Xi, X. X.Choi, Kyoung JinEom, C. B.Saxena, A.Lookman, T.
Keywords
PHASE-FIELD MODEL; THIN-FILMS; TRANSITION; EVOLUTION
Issue Date
2007-09
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.91, no.11, pp. -
Abstract
The phase transitions of superlattices into single- and multidomain states were studied using a mesoscale phase-field model incorporating structural inhomogeneity, micromechanics, and electrostatics. While the predictions of transition temperatures of BaTiO3/SrTiO3 superlattices into multidomains show remarkably good, quantitative agreement with ultraviolet Raman spectroscopic and variable-temperature x-ray diffraction measurements, the single-domain assumption breaks down for superlattices in which the nonferroelectric layer thickness exceeds the characteristic domain size in the ferroelectric layers.
URI
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DOI
10.1063/1.2785121
ISSN
0003-6951
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MSE_Journal Papers
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