Li, Y. L. Hu, S. Y. Tenne, D. Soukiassian, A. Schlom, D. G. Chen, L. Q. Xi, X. X. Choi, K. J. Eom, C. B. Saxena, A. Lookman, T. Jia, Q. X. 2024-01-21T00:02:57Z 2024-01-21T00:02:57Z 2021-08-31 2007-12-17 0003-6951 https://pubs.kist.re.kr/handle/201004/133879 We studied the phase transitions, domain morphologies, and polarizations in BaTiO3/SrTiO3 superlattices grown on SrTiO3 substrates. Using the phase field approach, we discovered the remarkable influence of film/substrate interfacial coherency on the ferroelectricity of the SrTiO3 layers within a superlattice: it is an orthorhombic ferroelectric for an incoherent interface while it exhibits only induced polarization by the adjacent BaTiO3 layers for a coherent interface. We presented the domain morphologies within individual BaTiO3 and SrTiO3 layers which have different ferroelectric symmetries. The results are compared to ultraviolet Raman spectroscopy and variable temperature x-ray diffraction measurements. English AMER INST PHYSICS DIELECTRIC-PROPERTIES DOMAIN-STRUCTURES THIN-FILMS ENHANCEMENT POLARIZATION DEPOSITION Interfacial coherency and ferroelectricity of BaTiO3/SrTiO3 superlattice films Article 10.1063/1.2823608 1 APPLIED PHYSICS LETTERS, v.91, no.25 APPLIED PHYSICS LETTERS 91 25 scie scopus 000251908100061 Physics, Applied Physics Article DIELECTRIC-PROPERTIES DOMAIN-STRUCTURES THIN-FILMS ENHANCEMENT POLARIZATION DEPOSITION