Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors

Autores
Ramírez, Miguel Ángel; Bassi, Welson; Parra, Rodrigo; Bueno, Paulo Roberto; Longo, Elson; Varela, José Arana
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The complete I-V characteristics of SnO 2-based varistors, particularly of the Pianaro system SCNCr consisting in 98.9%SnO 2+1%CoO+0.05%Nb 2O 5+0.05%Cr 2O 3, all in mol%, have been seldom reported in the literature. A comparative study at low and high currents of the nonohmic behavior of SCNCr- and ZnO-based varistors (modified Matsuoka system) is proposed in this work. The SCNCr system showed higher nonlinearity coefficients in the whole range of measured current. The electrical breakdown field (E b) was twice as high for the SCNCr system (5400 V/cm) than for the ZnO varistor (2600 V/cm) due to a smaller average grain size of the former (4.5 μm) with respect to the latter (8.5 μm). Nevertheless, we consider that another important factor responsible for the high E b in the SCNCr system is the great number of electrically active interfaces (85%) as determined with electrostatic force microscopy (EFM). It was also established that the SCNCr system might be produced in disks of smaller dimensions than that of commercial ZnO-based product, with a 5.0 cm -1 minimal area-volume (A/V) ratio. The SCNCr reached the saturation current in a short time because of the high resistivity of the grains, which is five times higher than that of the grains in ZnO-based varistors.
Fil: Ramírez, Miguel Ángel. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Bassi, Welson. Universidade de Sao Paulo; Brasil
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Varela, José Arana. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Materia
Sno2
Zno
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/67982
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/67982
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistorsRamírez, Miguel ÁngelBassi, WelsonParra, RodrigoBueno, Paulo RobertoLongo, ElsonVarela, José AranaSno2Znohttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The complete I-V characteristics of SnO 2-based varistors, particularly of the Pianaro system SCNCr consisting in 98.9%SnO 2+1%CoO+0.05%Nb 2O 5+0.05%Cr 2O 3, all in mol%, have been seldom reported in the literature. A comparative study at low and high currents of the nonohmic behavior of SCNCr- and ZnO-based varistors (modified Matsuoka system) is proposed in this work. The SCNCr system showed higher nonlinearity coefficients in the whole range of measured current. The electrical breakdown field (E b) was twice as high for the SCNCr system (5400 V/cm) than for the ZnO varistor (2600 V/cm) due to a smaller average grain size of the former (4.5 μm) with respect to the latter (8.5 μm). Nevertheless, we consider that another important factor responsible for the high E b in the SCNCr system is the great number of electrically active interfaces (85%) as determined with electrostatic force microscopy (EFM). It was also established that the SCNCr system might be produced in disks of smaller dimensions than that of commercial ZnO-based product, with a 5.0 cm -1 minimal area-volume (A/V) ratio. The SCNCr reached the saturation current in a short time because of the high resistivity of the grains, which is five times higher than that of the grains in ZnO-based varistors.Fil: Ramírez, Miguel Ángel. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Bassi, Welson. Universidade de Sao Paulo; BrasilFil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Varela, José Arana. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilWiley Blackwell Publishing, Inc2008-07-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67982Ramírez, Miguel Ángel; Bassi, Welson; Parra, Rodrigo; Bueno, Paulo Roberto; Longo, Elson; et al.; Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors; Wiley Blackwell Publishing, Inc; Journal of the American Ceramic Society; 91; 7; 8-7-2008; 2402-24040002-7820CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/j.1551-2916.2008.02436.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1551-2916.2008.02436.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:05:22Zoai:ri.conicet.gov.ar:11336/67982instacron: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:34982025-10-22 11:05:22.378CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
title Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
spellingShingle Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
Ramírez, Miguel Ángel
Sno2
Zno
title_short Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
title_full Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
title_fullStr Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
title_full_unstemmed Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
title_sort Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors
dc.creator.none.fl_str_mv Ramírez, Miguel Ángel
Bassi, Welson
Parra, Rodrigo
Bueno, Paulo Roberto
Longo, Elson
Varela, José Arana
author Ramírez, Miguel Ángel
author_facet Ramírez, Miguel Ángel
Bassi, Welson
Parra, Rodrigo
Bueno, Paulo Roberto
Longo, Elson
Varela, José Arana
author_role author
author2 Bassi, Welson
Parra, Rodrigo
Bueno, Paulo Roberto
Longo, Elson
Varela, José Arana
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Sno2
Zno
topic Sno2
Zno
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The complete I-V characteristics of SnO 2-based varistors, particularly of the Pianaro system SCNCr consisting in 98.9%SnO 2+1%CoO+0.05%Nb 2O 5+0.05%Cr 2O 3, all in mol%, have been seldom reported in the literature. A comparative study at low and high currents of the nonohmic behavior of SCNCr- and ZnO-based varistors (modified Matsuoka system) is proposed in this work. The SCNCr system showed higher nonlinearity coefficients in the whole range of measured current. The electrical breakdown field (E b) was twice as high for the SCNCr system (5400 V/cm) than for the ZnO varistor (2600 V/cm) due to a smaller average grain size of the former (4.5 μm) with respect to the latter (8.5 μm). Nevertheless, we consider that another important factor responsible for the high E b in the SCNCr system is the great number of electrically active interfaces (85%) as determined with electrostatic force microscopy (EFM). It was also established that the SCNCr system might be produced in disks of smaller dimensions than that of commercial ZnO-based product, with a 5.0 cm -1 minimal area-volume (A/V) ratio. The SCNCr reached the saturation current in a short time because of the high resistivity of the grains, which is five times higher than that of the grains in ZnO-based varistors.
Fil: Ramírez, Miguel Ángel. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Bassi, Welson. Universidade de Sao Paulo; Brasil
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Bueno, Paulo Roberto. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Varela, José Arana. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
description The complete I-V characteristics of SnO 2-based varistors, particularly of the Pianaro system SCNCr consisting in 98.9%SnO 2+1%CoO+0.05%Nb 2O 5+0.05%Cr 2O 3, all in mol%, have been seldom reported in the literature. A comparative study at low and high currents of the nonohmic behavior of SCNCr- and ZnO-based varistors (modified Matsuoka system) is proposed in this work. The SCNCr system showed higher nonlinearity coefficients in the whole range of measured current. The electrical breakdown field (E b) was twice as high for the SCNCr system (5400 V/cm) than for the ZnO varistor (2600 V/cm) due to a smaller average grain size of the former (4.5 μm) with respect to the latter (8.5 μm). Nevertheless, we consider that another important factor responsible for the high E b in the SCNCr system is the great number of electrically active interfaces (85%) as determined with electrostatic force microscopy (EFM). It was also established that the SCNCr system might be produced in disks of smaller dimensions than that of commercial ZnO-based product, with a 5.0 cm -1 minimal area-volume (A/V) ratio. The SCNCr reached the saturation current in a short time because of the high resistivity of the grains, which is five times higher than that of the grains in ZnO-based varistors.
publishDate 2008
dc.date.none.fl_str_mv 2008-07-08
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/11336/67982
Ramírez, Miguel Ángel; Bassi, Welson; Parra, Rodrigo; Bueno, Paulo Roberto; Longo, Elson; et al.; Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors; Wiley Blackwell Publishing, Inc; Journal of the American Ceramic Society; 91; 7; 8-7-2008; 2402-2404
0002-7820
CONICET Digital
CONICET
url http://hdl.handle.net/11336/67982
identifier_str_mv Ramírez, Miguel Ángel; Bassi, Welson; Parra, Rodrigo; Bueno, Paulo Roberto; Longo, Elson; et al.; Comparative electrical behavior at low and high current of SnO 2- and ZnO-based varistors; Wiley Blackwell Publishing, Inc; Journal of the American Ceramic Society; 91; 7; 8-7-2008; 2402-2404
0002-7820
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/j.1551-2916.2008.02436.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1551-2916.2008.02436.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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
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score 12.982451

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