Phenomenological theory of phase transitions in epitaxial BaTi O3 thin films

Autor: Shirokov, V.B., Yuzyuk, Yu.I., Dkhil, B., Lemanov, V.V.
Přispěvatelé: Southern Federal University [Rostov-on-Don] (SFEDU), Laboratoire Structures, Propriétés et Modélisation des solides (SPMS), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences [Moscow] (RAS), Institut de Chimie du CNRS (INC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: Physical Review B-Condensed Matter and Materials Physics
Physical Review B-Condensed Matter and Materials Physics, 2007, 75 (22), pp.224116. ⟨10.1103/PhysRevB.75.224116⟩
Physics of the Solid State
Physics of the Solid State, Springer, 2008, 50 (5), pp.928-936 ⟨10.1134/S106378340805020X⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2007, 75 (22), pp.224116. ⟨10.1103/PhysRevB.75.224116⟩
ISSN: 1098-0121
1063-7834
1090-6460
1550-235X
DOI: 10.1103/PhysRevB.75.224116⟩
Popis: We develop a phenomenological thermodynamic theory of ferroelectric BaTiO3 (BT) thin films epitaxially grown on cubic substrates using the Landau-Devonshire eight-order potential. The constructed "misfit-temperature" phase diagram is asymmetrical. We found that, overall view of the phase diagram depends on the values of compliances used in calculations and provide two qualitatively different diagrams. A thermodynamic path for BT film grown onto particular substrate can be found using a plot of the room-temperature tetragonal distortion (c-a)/a as a function of misfit strain.
6 pages, 3 figures
Databáze: OpenAIRE
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