New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis

Autores
Ramajo, Leandro Alfredo; Rubio Marcos, Fernando; Del Campo, Adolfo; Fernandez, José F.; Castro, Miriam Susana; Parra, Rodrigo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
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
Fil: Rubio Marcos, Fernando. Instituto de Ceramica y Vidrio de Madrid; España
Fil: Del Campo, Adolfo. Instituto de Ceramica y Vidrio de Madrid; España
Fil: Fernandez, José F.. Instituto de Ceramica y Vidrio de Madrid; España
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
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
Materia
Sodium Potasium Niobate
Raman Spectroscopy
Hydrothermal Synthesis
Lead-Free Piezoelectrics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10421
Acceder
id CONICETDig_0954e7e8d66c30969cddce7fe0af471a
oai_identifier_str oai:ri.conicet.gov.ar:11336/10421
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesisRamajo, Leandro AlfredoRubio Marcos, FernandoDel Campo, AdolfoFernandez, José F.Castro, Miriam SusanaParra, RodrigoSodium Potasium NiobateRaman SpectroscopyHydrothermal SynthesisLead-Free Piezoelectricshttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Different 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.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; ArgentinaFil: Rubio Marcos, Fernando. Instituto de Ceramica y Vidrio de Madrid; EspañaFil: Del Campo, Adolfo. Instituto de Ceramica y Vidrio de Madrid; EspañaFil: Fernandez, José F.. Instituto de Ceramica y Vidrio de Madrid; EspañaFil: 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; ArgentinaFil: 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; ArgentinaElsevier2014-06-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10421Ramajo, 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; 14701-147120272-8842enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0272884214009547info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2014.06.059info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:45Zoai:ri.conicet.gov.ar:11336/10421instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:00:45.332CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
title New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
spellingShingle New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
Ramajo, Leandro Alfredo
Sodium Potasium Niobate
Raman Spectroscopy
Hydrothermal Synthesis
Lead-Free Piezoelectrics
title_short New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
title_full New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
title_fullStr New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
title_full_unstemmed New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
title_sort New insights into the properties of KxNa(1-x)NbO3 ceramics obtained by hydrothermal synthesis
dc.creator.none.fl_str_mv Ramajo, Leandro Alfredo
Rubio Marcos, Fernando
Del Campo, Adolfo
Fernandez, José F.
Castro, Miriam Susana
Parra, Rodrigo
author Ramajo, Leandro Alfredo
author_facet Ramajo, Leandro Alfredo
Rubio Marcos, Fernando
Del Campo, Adolfo
Fernandez, José F.
Castro, Miriam Susana
Parra, Rodrigo
author_role author
author2 Rubio Marcos, Fernando
Del Campo, Adolfo
Fernandez, José F.
Castro, Miriam Susana
Parra, Rodrigo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Sodium Potasium Niobate
Raman Spectroscopy
Hydrothermal Synthesis
Lead-Free Piezoelectrics
topic Sodium Potasium Niobate
Raman Spectroscopy
Hydrothermal Synthesis
Lead-Free Piezoelectrics
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
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
Fil: Rubio Marcos, Fernando. Instituto de Ceramica y Vidrio de Madrid; España
Fil: Del Campo, Adolfo. Instituto de Ceramica y Vidrio de Madrid; España
Fil: Fernandez, José F.. Instituto de Ceramica y Vidrio de Madrid; España
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
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
description 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.
publishDate 2014
dc.date.none.fl_str_mv 2014-06-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/10421
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
0272-8842
url http://hdl.handle.net/11336/10421
identifier_str_mv 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
0272-8842
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0272884214009547
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ceramint.2014.06.059
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613792708689920
score 13.070432

Publicaciones similares