Dielectric investigation of the Sr3WO6 double perovskite at RF/microwave frequencies
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
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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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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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 |
_version_ |
1813028988221652992 |