Ferroelectric nanodomains in epitaxial PbTiO.sub.3./sub. films grown on SmScO.sub.3./sub. and TbScO.sub.3./sub. substrates

0394474 - FZÚ 2014 RIV US eng J - Journal Article
Borodavka, Fedir - Gregora, Ivan - Bartasyte, A. - Margueron, S. - Plausinaitiene, V. - Abrutis, A. - Hlinka, Jiří
Ferroelectric nanodomains in epitaxial PbTiO₃ films grown on SmScO₃ and TbScO₃ substrates.
Journal of Applied Physics. Roč. 113, č. 18 (2013), "187216-1"-"187216-7". ISSN 0021-8979. E-ISSN 1089-7550
R&D Projects: GA ČR GD202/09/H041; GA ČR GAP204/10/0616
Grant - others:GA UK(CZ) SVV-2011-263303
Institutional support: RVO:68378271
Keywords : electric domains * epitaxial layers * ferroelectric thin films * lead compounds * MOCVD * phonons * Raman spectra * texture
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.185, year: 2013

Domain structures of 320 nm thin epitaxial films of ferroelectric PbTiO3 grown by metal-organic chemical vapor deposition technique in identical conditions on SmScO3 and TbScO3 perovskite substrates have been investigated by Raman spectroscopy and piezoresponse force microscopy techniques. Phonon frequency shifts and typical domain structure motifs are discussed. The results reveal strikingly different domain structure architecture: domain structures of the PbTiO3 film grown on SmScO3 have dominantly a-domain orientation while strongly preferential c-domain orientation was found in the PbTiO3 film grown on the TbScO3 substrate. Differences between the two cases are traced back to the film-substrate lattice mismatch at the deposition temperature.
Permanent Link: http://hdl.handle.net/11104/0222685