Soukiassian, A. Tian, W. Vaithyanathan, V. Haeni, J. H. Chen, L. Q. Xi, X. X. Schlom, D. G. Tenne, D. A. Sun, H. P. Pan, X. Q. Choi, K. J. Eom, C. B. Li, Y. L. Jia, Q. X. Constantin, C. Feenstra, R. M. Bernhagen, M. Reiche, P. Uecker, R. 2024-01-20T23:31:19Z 2024-01-20T23:31:19Z 2021-08-31 2008-05 0884-2914 https://pubs.kist.re.kr/handle/201004/133541 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 superlattices was as narrow as 7 are s (0.002 degrees). High-resolution transmission electron microscopy reveals nearly atomically abrupt interfaces. Temperature-dependent ultraviolet Raman and XRD, were used to reveal the paraelectric-to-ferroelectric. transition temperature (T-C). Our results demonstrate the importance of finite size and strain effects on the T-C of BaTiO3/SrTiO3 superlattices. In addition to probing finite size and strain effects, these hetero structures may be relevant for novel phonon devices, including mirrors, filters, and cavities for coherent phonon generation and control. English CAMBRIDGE UNIV PRESS THIN-FILMS SRTIO3 FERROELECTRICITY ENHANCEMENT FABRICATION DIELECTRICS SURFACE Growth of nanoscale BaTiO3/SMO3 superlattices by molecular-beam epitaxy Article 10.1557/JMR.2008.0181 1 JOURNAL OF MATERIALS RESEARCH, v.23, no.5, pp.1417 - 1432 JOURNAL OF MATERIALS RESEARCH 23 5 1417 1432 scie scopus 000255543800030 Materials Science, Multidisciplinary Materials Science Article THIN-FILMS SRTIO3 FERROELECTRICITY ENHANCEMENT FABRICATION DIELECTRICS SURFACE