Abstract
A phenomenological thermodynamic theory of ferroelectric thin films epitaxially grow on cubic substrates is developed using a new form of the thermodynamic potential. which corresponds to the ac tual mechanical boundary conditions of the problem, For single-domain BaTiO3 and PbTiO3 films, the "misfit-temperature" phase diagrams are constructed. It is found that the 2D clamping of the films, apart from a shift of the temperature of the ferroelectric transition, results in a change of its order. A change of the sequence of the phases and the appearance of phases forbidden in the bulk crystals are predicted. [S0031-9007(98)05421-0].
Keywords
FerroelectricityMaterials scienceCondensed matter physicsEpitaxyPhase boundaryPhase diagramPhase transitionPhenomenological modelThin filmClampingThermodynamic potentialPhase (matter)Boundary (topology)Transition temperatureThermodynamicsNanotechnologyPhysicsOptoelectronicsQuantum mechanicsLayer (electronics)DielectricMathematical analysis
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Publication Info
- Year
- 1998
- Type
- article
- Volume
- 80
- Issue
- 9
- Pages
- 1988-1991
- Citations
- 1597
- Access
- Closed
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Cite This
N. A. Pertsev,
A. G. Zembilgotov,
A. K. Tagantsev
(1998).
Effect of Mechanical Boundary Conditions on Phase Diagrams of Epitaxial Ferroelectric Thin Films.
Physical Review Letters
, 80
(9)
, 1988-1991.
https://doi.org/10.1103/physrevlett.80.1988
Identifiers
- DOI
- 10.1103/physrevlett.80.1988