Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics

Detalhes bibliográficos
Autor(a) principal: Felix, A. A. [UNESP]
Data de Publicação: 2019
Outros Autores: Saska, L. A. [UNESP], Bezzon, V. D.N., Cilense, M. [UNESP], Ramirez, M. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.ceramint.2019.04.141
http://hdl.handle.net/11449/189027
Resumo: Polycrystalline Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics were studied as a function of the strontium content in order to understand its effects on the structure, microstructure and electrical characteristics of these compounds. Our results showed that the Sr 2+ cationic substitution into the A sites of the initial CaCu 3 Ti 4 O 12 (CCTO) phase leads to crystalline phases with specific stoichiometry. Although the same space group is observed, the cationic substitution induces larger lattice parameter, phase density, and chemical bonding length when compared to the initial CCTO phase. Microstructure results indicated that the strontium content has a significant influence on sample sinterability leading to changes in grain growth and densification process. The non-ohmic characterization showed that the Ca 0.5 Sr 0.5 Cu 3 Ti 4 O 12 phase exhibits improved breakdown electric field (32 kV/cm), non-linear coefficient (269) and lower leakage current (26 μA), while the SrCu 3 Ti 4 O 12 phase presents permittivity of about 5000 at 1 kHz.
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spelling Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramicsCa 1-x Sr x Cu 3 Ti 4 O 12Crystalline structureDielectric responseNon-ohmic behaviorPolycrystalline Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics were studied as a function of the strontium content in order to understand its effects on the structure, microstructure and electrical characteristics of these compounds. Our results showed that the Sr 2+ cationic substitution into the A sites of the initial CaCu 3 Ti 4 O 12 (CCTO) phase leads to crystalline phases with specific stoichiometry. Although the same space group is observed, the cationic substitution induces larger lattice parameter, phase density, and chemical bonding length when compared to the initial CCTO phase. Microstructure results indicated that the strontium content has a significant influence on sample sinterability leading to changes in grain growth and densification process. The non-ohmic characterization showed that the Ca 0.5 Sr 0.5 Cu 3 Ti 4 O 12 phase exhibits improved breakdown electric field (32 kV/cm), non-linear coefficient (269) and lower leakage current (26 μA), while the SrCu 3 Ti 4 O 12 phase presents permittivity of about 5000 at 1 kHz.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Physical Chemistry Department Chemistry Institute São Paulo State University (UNESP)São Paulo State University (UNESP) Faculty of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410Center for Natural and Human Sciences (CCNH) Federal University of ABC (UFABC)Physical Chemistry Department Chemistry Institute São Paulo State University (UNESP)São Paulo State University (UNESP) Faculty of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410CNPq: 165902/2015-9Universidade Estadual Paulista (Unesp)Universidade Federal do ABC (UFABC)Felix, A. A. [UNESP]Saska, L. A. [UNESP]Bezzon, V. D.N.Cilense, M. [UNESP]Ramirez, M. A. [UNESP]2019-10-06T16:27:27Z2019-10-06T16:27:27Z2019-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article14305-14311http://dx.doi.org/10.1016/j.ceramint.2019.04.141Ceramics International, v. 45, n. 11, p. 14305-14311, 2019.0272-8842http://hdl.handle.net/11449/18902710.1016/j.ceramint.2019.04.1412-s2.0-85064742324Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCeramics Internationalinfo:eu-repo/semantics/openAccess2021-10-23T19:02:01Zoai:repositorio.unesp.br:11449/189027Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:43:39.660275Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
title Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
spellingShingle Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
Felix, A. A. [UNESP]
Ca 1-x Sr x Cu 3 Ti 4 O 12
Crystalline structure
Dielectric response
Non-ohmic behavior
title_short Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
title_full Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
title_fullStr Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
title_full_unstemmed Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
title_sort Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
author Felix, A. A. [UNESP]
author_facet Felix, A. A. [UNESP]
Saska, L. A. [UNESP]
Bezzon, V. D.N.
Cilense, M. [UNESP]
Ramirez, M. A. [UNESP]
author_role author
author2 Saska, L. A. [UNESP]
Bezzon, V. D.N.
Cilense, M. [UNESP]
Ramirez, M. A. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal do ABC (UFABC)
dc.contributor.author.fl_str_mv Felix, A. A. [UNESP]
Saska, L. A. [UNESP]
Bezzon, V. D.N.
Cilense, M. [UNESP]
Ramirez, M. A. [UNESP]
dc.subject.por.fl_str_mv Ca 1-x Sr x Cu 3 Ti 4 O 12
Crystalline structure
Dielectric response
Non-ohmic behavior
topic Ca 1-x Sr x Cu 3 Ti 4 O 12
Crystalline structure
Dielectric response
Non-ohmic behavior
description Polycrystalline Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics were studied as a function of the strontium content in order to understand its effects on the structure, microstructure and electrical characteristics of these compounds. Our results showed that the Sr 2+ cationic substitution into the A sites of the initial CaCu 3 Ti 4 O 12 (CCTO) phase leads to crystalline phases with specific stoichiometry. Although the same space group is observed, the cationic substitution induces larger lattice parameter, phase density, and chemical bonding length when compared to the initial CCTO phase. Microstructure results indicated that the strontium content has a significant influence on sample sinterability leading to changes in grain growth and densification process. The non-ohmic characterization showed that the Ca 0.5 Sr 0.5 Cu 3 Ti 4 O 12 phase exhibits improved breakdown electric field (32 kV/cm), non-linear coefficient (269) and lower leakage current (26 μA), while the SrCu 3 Ti 4 O 12 phase presents permittivity of about 5000 at 1 kHz.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T16:27:27Z
2019-10-06T16:27:27Z
2019-08-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.ceramint.2019.04.141
Ceramics International, v. 45, n. 11, p. 14305-14311, 2019.
0272-8842
http://hdl.handle.net/11449/189027
10.1016/j.ceramint.2019.04.141
2-s2.0-85064742324
url http://dx.doi.org/10.1016/j.ceramint.2019.04.141
http://hdl.handle.net/11449/189027
identifier_str_mv Ceramics International, v. 45, n. 11, p. 14305-14311, 2019.
0272-8842
10.1016/j.ceramint.2019.04.141
2-s2.0-85064742324
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ceramics International
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 14305-14311
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128554733404160

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