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dc.contributor.author
Ramajo, Leandro Alfredo
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Rubio Marcos, Fernando
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Del Campo, Adolfo
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Fernandez, José F.
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Castro, Miriam Susana
dc.contributor.author
Parra, Rodrigo
dc.date.available
2016-12-28T15:06:28Z
dc.date.issued
2014-06-18
dc.identifier.citation
Ramajo, Leandro Alfredo; Rubio Marcos, Fernando; Del Campo, Adolfo; Fernandez, José F.; Castro, Miriam Susana; et al.; New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis; Elsevier; Ceramics International; 40; 9; 18-6-2014; 14701-14712
dc.identifier.issn
0272-8842
dc.identifier.uri
http://hdl.handle.net/11336/10421
dc.description.abstract
Different reaction conditions for the hydrothermal synthesis of KxNa(1-x)NbO3 (KNN) were studied. Samples were synthesized at 190°C in a Teflon lined autoclave and the effects of different KOH/(KOH+NaOH) ratios (0 to 0.8) and total hydroxide concentration (2 to 8N) on the microstructural and electrical properties of KNN were analyzed. A sodium rich phase with a monoclinic structure has been obtained, in which the orthorhombic phase coexists as detected by X-ray diffraction. These analyses also revealed that the x value in the KxNa(1-x)NbO3 system gradually increases with the increasing KOH/(KOH+NaOH) ratio and total hydroxide concentration. Samples with higher potassium content showed higher density and improved electrical behavior. An exhaustive characterization by Confocal Raman Microscope allowed the observation of the ferroelectric domain structure in KNN ceramics. It was established that the grain boundaries constrain the 90º domain walls in order to reduce the stress accumulated by the orthorhombic and the monoclinic phase coexistence within the KNN grains.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Sodium Potasium Niobate
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Raman Spectroscopy
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Hydrothermal Synthesis
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Lead-Free Piezoelectrics
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Cerámicos
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-10-07T20:16:21Z
dc.journal.volume
40
dc.journal.number
9
dc.journal.pagination
14701-14712
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ramajo, Leandro Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación En Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Misiones. Facultad de Ingenieria; Argentina
dc.description.fil
Fil: Rubio Marcos, Fernando. Instituto de Ceramica y Vidrio de Madrid; España
dc.description.fil
Fil: Del Campo, Adolfo. Instituto de Ceramica y Vidrio de Madrid; España
dc.description.fil
Fil: Fernandez, José F.. Instituto de Ceramica y Vidrio de Madrid; España
dc.description.fil
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación En Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación En Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.journal.title
Ceramics International
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0272884214009547
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ceramint.2014.06.059
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