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


Growth of nanoscale BaTiO3/SMO3 superlattices by molecular-beam epitaxy

DC Field Value Language Soukiassian, A. ko Tian, W. ko Vaithyanathan, V. ko Haeni, J. H. ko Chen, L. Q. ko Xi, X. X. ko Schlom, D. G. ko Tenne, D. A ko Sun, H. P. ko Pan, X. Q. ko Choi, Kyoung Jin ko Eom, C. B. ko Li, Y. L. ko Jia, Q. X. ko Constantin, C. ko Feenstra, R. M. ko Bernhagen, M. ko Reiche, P. ko Uecker, R. ko 2014-10-24T00:09:51Z - 2014-10-22 ko 2008-05 -
dc.identifier.citation JOURNAL OF MATERIALS RESEARCH, v.23, no.5, pp.1417 - 1432 ko
dc.identifier.issn 0884-2914 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Commensurate BaTiO3/SrTiO3 superlattices were grown by reactive molecular-beam epitaxy on four different substrates: TiO2-terminated (001) SrTiO3, (101) DyScO3, (101) GdScO3, and (101) SmScO3. With the aid of reflection high-energy electron diffraction (RHEED), precise single-monolayer doses of BaO, SrO, and TiO2 were deposited sequentially to create commensurate BaTiO3/ SrTiO3 superlattices with a variety of periodicities. X-ray diffraction (XRD) measurements exhibit clear superlattice peaks at the expected positions. The rocking curve full width half-maximum of the soperlattices was as narrow as 7 arc s (0.002°). High-resolution transmission electron microscopy reveals nearly atomically abrupt interfaces. Temperature-dependent ultraviolet Raman and XRD were used to reveal the paraelectric-to-ferroeleotric transition temperature (TC). Our results demonstrate the importance of finite size and strain effects on the TC of BaTiO3/ SrTiO3 superlattices. In addition to probing finite size and strain effects, these heterostructures may be relevant: for novel phooon devices, including mirrors, filters, and cavities for coherent phonon generation and control. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher CAMBRIDGE UNIV PRESS ko
dc.subject THIN-FILMS ko
dc.subject SRTIO3 ko
dc.subject ENHANCEMENT ko
dc.subject FABRICATION ko
dc.subject DIELECTRICS ko
dc.subject SURFACE ko
dc.title Growth of nanoscale BaTiO3/SMO3 superlattices by molecular-beam epitaxy ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-44649092713 ko
dc.identifier.wosid 000255543800030 ko
dc.type.rims ART ko
dc.description.wostc 17 *
dc.description.scopustc 17 * 2015-05-06 * 2014-10-22 *
dc.identifier.doi 10.1557/jmr.2008.0181 ko
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