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Ingénierie des contraintes de films minces d'oxydes de LaNiO3 : les substrats piézoélectriques

Abstract : This work was born from the idea of ​​combining materials in thin films form, an area that motivates many years researchers LMGP, to substrates with high piezoelectric coefficients of deformation. Piezoelectric materials can convert electrical energy into mechanical energy (strain) and vice versa. So we can imagine that a thin film synthesized on the surface of a piezoelectric substrate will benefit from the substrate deformation when subjected to an electric field. The substrate involved is the PMN-PT, a compound that shows high piezoelectric coefficient. In this study the film synthesized is the LaNiO3. It crystallizes in a perovskite structure ABO3. This structure has the advantage of a wide variety of structural distortions and can accommodate a large number of chemical elements.
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Submitted on : Monday, July 30, 2012 - 2:32:47 PM
Last modification on : Friday, March 25, 2022 - 9:43:26 AM
Long-term archiving on: : Wednesday, October 31, 2012 - 3:26:17 AM


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  • HAL Id : tel-00721808, version 1



Nicolas Chaban. Ingénierie des contraintes de films minces d'oxydes de LaNiO3 : les substrats piézoélectriques. Autre. Université de Grenoble, 2012. Français. ⟨NNT : 2012GRENI008⟩. ⟨tel-00721808⟩



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