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http://hdl.handle.net/10773/20372
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mahajan, Amit | pt |
dc.contributor.author | Pinho, Rui | pt |
dc.contributor.author | Dolhen, Morgane | pt |
dc.contributor.author | Elisabete Costa, M. | pt |
dc.contributor.author | Vilarinho, Paula M. | pt |
dc.date.accessioned | 2017-12-07T19:44:52Z | - |
dc.date.issued | 2016 | pt |
dc.identifier.issn | 0743-7463 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20372 | - |
dc.description.abstract | A current challenge for the fabrication of functional oxide-based devices is related with the need of environmental and sustainable materials and processes. By considering both lead-free ferroelectrics of potassium sodium niobate (K0.5Na0.5NbO3, KNN) and aqueous-based electrophoretic deposition here we demonstrate that an eco-friendly aqueous solution-based process can be used to produce KNN thick coatings with improved electromechanical performance. KNN thick films on platinum substrates with thickness varying between 10 and 15 mu m have a dielectric permittivity of 495, dielectric losses of 0.08 at 1 MHz, and a piezoelectric coefficient d(33) of, similar to 70 pC/N. At T-C these films display a relative permittivity of 2166 and loss tangent of 0.11 at 1 MHz. A comparison of the physical properties between these films and their bulk ceramics counterparts demonstrates the impact of the aqueous-based electrophoretic deposition (EPD) technique for the preparation of lead-free ferroelectric thick films. This opens the door to the possible development of high-performance, lead-free piezoelectric thick films by a sustainable low-cost process, expanding the applicability of lead-free piezoelectrics. | pt |
dc.language.iso | eng | pt |
dc.publisher | AMER CHEMICAL SOC | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F65415%2F2009/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | TEMPERATURE-DEPENDENCE | pt |
dc.subject | DIELECTRIC-PROPERTIES | pt |
dc.subject | FREE PIEZOCERAMICS | pt |
dc.subject | DOMAIN-STRUCTURE | pt |
dc.subject | CERAMICS | pt |
dc.subject | SUSPENSION | pt |
dc.subject | OXIDE | pt |
dc.subject | EPD | pt |
dc.subject | EVOLUTION | pt |
dc.title | Unleashing the Full Sustainable Potential of Thick Films of Lead-Free Potassium Sodium Niobate (K0.5Na0.5NbO3) by Aqueous Electrophoretic Deposition | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 5241 | pt |
degois.publication.issue | 21 | pt |
degois.publication.lastPage | 5249 | pt |
degois.publication.title | LANGMUIR | pt |
degois.publication.volume | 32 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1021/acs.langmuir.6b00669 | pt |
dc.identifier.doi | 10.1021/acs.langmuir.6b00669 | pt |
Appears in Collections: | CICECO - Artigos |
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