Effective pyroelectric response of compositionally graded ferroelectric materials
Authors:
- 23 February 2005
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 86 (9) , 092903
Abstract
A thermodynamic theory is used to determine the effective pyroelectric coefficients of polarization graded ferroelectrics, with values in excess of are predicted for various barium strontium titanate thin films. Maximum values closer to are obtained for a thick material—compositionally graded between pure barium titanate and one that has barium to strontium in the ratio of 75:25.
Keywords
This publication has 14 references indexed in Scilit:
- Thermodynamic properties of compositionally gradedBa1−xSrxTiO3 thin filmsJournal of Applied Physics, 2004
- Thermodynamic properties of temperature graded ferroelectric filmJournal of Physics: Condensed Matter, 2003
- Fundamentals of graded ferroic materials and devicesPhysical Review B, 2003
- Thermodynamic analysis of temperature-graded ferroelectricsApplied Physics Letters, 2003
- Phase diagrams and dielectric response of epitaxial barium strontium titanate films: A theoretical analysisJournal of Applied Physics, 2002
- Coherent phase equilibria in a bending filmActa Materialia, 2002
- Giant effective pyroelectric coefficients from graded ferroelectric devicesApplied Physics Letters, 1998
- Temperature dependence of conventional and effective pyroelectric coefficients for compositionally graded BaxSr1−xTiO3 filmsJournal of Applied Physics, 1998
- Some elementary connections between curvature and mismatch strain in compositionally graded thin filmsJournal of the Mechanics and Physics of Solids, 1996
- Charge pumping and pseudopyroelectric effect in active ferroelectric relaxor-type filmsPhysical Review Letters, 1992