Photocontrolled strain in polycrystalline ferroelectrics via domain engineering strategy
The use of photonic concepts to achieve nanoactuation based on light triggering requires complex architectures to obtain the desired effect.In thiscontext, the recent discoveryof reversible optical control of the domain configurationin ferroelectricsoffers anew light-ferroic interplaythat can be eas...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/345488 |
| Acesso em linha: | https://hdl.handle.net/2117/345488 https://dx.doi.org/10.1021/acsami.1c03162 |
| Access Level: | acceso abierto |
| Palavra-chave: | Electrical engineering -- Materials Photoferroelectrics barium titanate ferroelectric domains photo-induced strain light-induced phenomena Ferroelectricitat Ferroelectricitat -- Materials Enginyeria elèctrica -- Materials Àrees temàtiques de la UPC::Enginyeria dels materials::Materials funcionals::Materials elèctrics i electrònics |
| Resumo: | The use of photonic concepts to achieve nanoactuation based on light triggering requires complex architectures to obtain the desired effect.In thiscontext, the recent discoveryof reversible optical control of the domain configurationin ferroelectricsoffers anew light-ferroic interplaythat can be easily controlled. To date, however, the optical control of ferroelectric domains is explored insingle crystals, although polycrystals are technologically more desirable because they can be manufactured in a scalable and reproducible fashion. Here we report experimental evidencesfora large photo-strain response in polycrystalline BaTiO3that is comparable to theirelectro-strain values. Domainsengineering is performed through grain size control, thereby evidencing that charged domain walls appear to be the functional interfaces for the light-driven domain switching. Thefindingsshed light onthe design of high-performance photo-actuatorsbased on ferroelectric ceramics, providing afeasible alternativeto the conventional voltage-driven nanoactuators |
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