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Phenomenological theory of phase transitions in epitaxial BaTiO3 thin films by Shirokov, V. B.; Yuzyuk, Yu. I.; Dkhil, B.; Lemanov, V. V. is a scholarly article available to read on EtoBox.

What is Phenomenological theory of phase transitions in epitaxial BaTiO3 thin films about?

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.

Author

Shirokov, V. B.; Yuzyuk, Yu. I.; Dkhil, B.; Lemanov, V. V.

Published

2007

Language

EN