Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies

Detalhes bibliográficos
Autor(a) principal: Paiva, Denis Valony Martins
Data de Publicação: 2016
Outros Autores: Silva, Marcelo Antonio Santos da, Sombra, Antônio Sérgio Bezerra, Fechine, Pierre Basílio Almeida
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/43967
Resumo: This work reports the dielectric properties of Sr3WO6 (SWO) double perovskite at radio frequencies as a function of the temperature and a study in microwaves range to evaluate the material as a novel dielectric resonator. Thermo-activated charge transfer process for SWO ceramic was observed and two resistor–capacitor associations were fitted for the Nyquist diagram. SWO presented negative values of temperature coefficient of capacitance (TCC) and the activation energies of dielectric relaxation processes were measured by conductivity (1.35 eV), imaginary modulus (1.38 eV) and imaginary impedance (1.36 eV). For the microwave range, SWO shows high dielectric permittivity (13.57) and dielectric loss (0.0281). The dielectric resonator antenna (DRA) fabricated from SWO ceramic presented an operation frequency in 4.1 GHz and return loss below 40 dB. It was possible to evaluate the performance of the antenna from numerical simulation. From these results, the SWO based DRA shows good properties to be used as a novel microwave dielectric resonator.
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spelling Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequenciesPerovskita duplaDielétricosPropriedades dielétricasThis work reports the dielectric properties of Sr3WO6 (SWO) double perovskite at radio frequencies as a function of the temperature and a study in microwaves range to evaluate the material as a novel dielectric resonator. Thermo-activated charge transfer process for SWO ceramic was observed and two resistor–capacitor associations were fitted for the Nyquist diagram. SWO presented negative values of temperature coefficient of capacitance (TCC) and the activation energies of dielectric relaxation processes were measured by conductivity (1.35 eV), imaginary modulus (1.38 eV) and imaginary impedance (1.36 eV). For the microwave range, SWO shows high dielectric permittivity (13.57) and dielectric loss (0.0281). The dielectric resonator antenna (DRA) fabricated from SWO ceramic presented an operation frequency in 4.1 GHz and return loss below 40 dB. It was possible to evaluate the performance of the antenna from numerical simulation. From these results, the SWO based DRA shows good properties to be used as a novel microwave dielectric resonator.RSC Advances2019-07-23T16:22:02Z2019-07-23T16:22:02Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPAIVA, D. V. M.; SILVA, M. A. S.; SOMBRA, A. S. B.; FECHINE, P. B. A. Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies. RSC Advances, London, v. 6, n. 48, p. 42502-42509, 2016.http://www.repositorio.ufc.br/handle/riufc/43967Paiva, Denis Valony MartinsSilva, Marcelo Antonio Santos daSombra, Antônio Sérgio BezerraFechine, Pierre Basílio Almeidainfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFC2023-10-10T17:03:15Zoai:repositorio.ufc.br:riufc/43967Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:53:51.066134Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
title Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
spellingShingle Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
Paiva, Denis Valony Martins
Perovskita dupla
Dielétricos
Propriedades dielétricas
title_short Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
title_full Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
title_fullStr Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
title_full_unstemmed Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
title_sort Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
author Paiva, Denis Valony Martins
author_facet Paiva, Denis Valony Martins
Silva, Marcelo Antonio Santos da
Sombra, Antônio Sérgio Bezerra
Fechine, Pierre Basílio Almeida
author_role author
author2 Silva, Marcelo Antonio Santos da
Sombra, Antônio Sérgio Bezerra
Fechine, Pierre Basílio Almeida
author2_role author
author
author
dc.contributor.author.fl_str_mv Paiva, Denis Valony Martins
Silva, Marcelo Antonio Santos da
Sombra, Antônio Sérgio Bezerra
Fechine, Pierre Basílio Almeida
dc.subject.por.fl_str_mv Perovskita dupla
Dielétricos
Propriedades dielétricas
topic Perovskita dupla
Dielétricos
Propriedades dielétricas
description This work reports the dielectric properties of Sr3WO6 (SWO) double perovskite at radio frequencies as a function of the temperature and a study in microwaves range to evaluate the material as a novel dielectric resonator. Thermo-activated charge transfer process for SWO ceramic was observed and two resistor–capacitor associations were fitted for the Nyquist diagram. SWO presented negative values of temperature coefficient of capacitance (TCC) and the activation energies of dielectric relaxation processes were measured by conductivity (1.35 eV), imaginary modulus (1.38 eV) and imaginary impedance (1.36 eV). For the microwave range, SWO shows high dielectric permittivity (13.57) and dielectric loss (0.0281). The dielectric resonator antenna (DRA) fabricated from SWO ceramic presented an operation frequency in 4.1 GHz and return loss below 40 dB. It was possible to evaluate the performance of the antenna from numerical simulation. From these results, the SWO based DRA shows good properties to be used as a novel microwave dielectric resonator.
publishDate 2016
dc.date.none.fl_str_mv 2016
2019-07-23T16:22:02Z
2019-07-23T16:22:02Z
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 PAIVA, D. V. M.; SILVA, M. A. S.; SOMBRA, A. S. B.; FECHINE, P. B. A. Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies. RSC Advances, London, v. 6, n. 48, p. 42502-42509, 2016.
http://www.repositorio.ufc.br/handle/riufc/43967
identifier_str_mv PAIVA, D. V. M.; SILVA, M. A. S.; SOMBRA, A. S. B.; FECHINE, P. B. A. Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies. RSC Advances, London, v. 6, n. 48, p. 42502-42509, 2016.
url http://www.repositorio.ufc.br/handle/riufc/43967
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv RSC Advances
publisher.none.fl_str_mv RSC Advances
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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