Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.

Detalhes bibliográficos
Autor(a) principal: Freitas, Antonio Evangelista de
Data de Publicação: 2020
Outros Autores: Manhabosco, Taíse Matte, Batista, Ronaldo Junio Campos, Rêgo Segundo, Alan Kardek, Araujo, Humberto Xavier de, Araujo, Fernando Gabriel da Silva, Costa, Adilson Rodrigues da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/12638
https://doi.org/10.3390/ma13020386
Resumo: Titanium dioxide substrates have been synthesized by means of solid-state reactions with sintering temperatures varying from 1150 ◦C up to 1350 ◦C. X-ray diffraction and scanning electron microscopy (SEM) where employed to investigate the crystal structure, grain size and porosity of the resulting samples. The obtained ceramics are tetragonal (rutile phase) with average grain sizes varying from 2.94 µm up to 5.81 µm. The average grain size of samples increases with increasing temperature, while the porosity decreases. The effect of microstructure on the dielectric properties has been also studied. The reduction of porosity of samples significantly improves the dielectric parameters (relative dielectric permittivity and loss tangent) in comparison to those of commercial substrates, indicating that the obtained ceramic substrates could be useful in the miniaturization of telecommunication devices.
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spelling Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.PermittivitySolid state sinteringPorosityTitanium dioxide substrates have been synthesized by means of solid-state reactions with sintering temperatures varying from 1150 ◦C up to 1350 ◦C. X-ray diffraction and scanning electron microscopy (SEM) where employed to investigate the crystal structure, grain size and porosity of the resulting samples. The obtained ceramics are tetragonal (rutile phase) with average grain sizes varying from 2.94 µm up to 5.81 µm. The average grain size of samples increases with increasing temperature, while the porosity decreases. The effect of microstructure on the dielectric properties has been also studied. The reduction of porosity of samples significantly improves the dielectric parameters (relative dielectric permittivity and loss tangent) in comparison to those of commercial substrates, indicating that the obtained ceramic substrates could be useful in the miniaturization of telecommunication devices.2020-08-21T18:47:39Z2020-08-21T18:47:39Z2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfFREITAS, A. E. de et al. Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities. Materials, v. 13, n. 2, p. 386, 2020. Disponível em: <https://www.mdpi.com/1996-1944/13/2/386>. Acesso em: 10 mar. 2020.1996-1944http://www.repositorio.ufop.br/handle/123456789/12638https://doi.org/10.3390/ma13020386This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Fonte: o próprio artigo.info:eu-repo/semantics/openAccessFreitas, Antonio Evangelista deManhabosco, Taíse MatteBatista, Ronaldo Junio CamposRêgo Segundo, Alan KardekAraujo, Humberto Xavier deAraujo, Fernando Gabriel da SilvaCosta, Adilson Rodrigues daengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2020-08-21T18:47:39Zoai:repositorio.ufop.br:123456789/12638Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332020-08-21T18:47:39Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
title Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
spellingShingle Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
Freitas, Antonio Evangelista de
Permittivity
Solid state sintering
Porosity
title_short Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
title_full Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
title_fullStr Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
title_full_unstemmed Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
title_sort Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities.
author Freitas, Antonio Evangelista de
author_facet Freitas, Antonio Evangelista de
Manhabosco, Taíse Matte
Batista, Ronaldo Junio Campos
Rêgo Segundo, Alan Kardek
Araujo, Humberto Xavier de
Araujo, Fernando Gabriel da Silva
Costa, Adilson Rodrigues da
author_role author
author2 Manhabosco, Taíse Matte
Batista, Ronaldo Junio Campos
Rêgo Segundo, Alan Kardek
Araujo, Humberto Xavier de
Araujo, Fernando Gabriel da Silva
Costa, Adilson Rodrigues da
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Freitas, Antonio Evangelista de
Manhabosco, Taíse Matte
Batista, Ronaldo Junio Campos
Rêgo Segundo, Alan Kardek
Araujo, Humberto Xavier de
Araujo, Fernando Gabriel da Silva
Costa, Adilson Rodrigues da
dc.subject.por.fl_str_mv Permittivity
Solid state sintering
Porosity
topic Permittivity
Solid state sintering
Porosity
description Titanium dioxide substrates have been synthesized by means of solid-state reactions with sintering temperatures varying from 1150 ◦C up to 1350 ◦C. X-ray diffraction and scanning electron microscopy (SEM) where employed to investigate the crystal structure, grain size and porosity of the resulting samples. The obtained ceramics are tetragonal (rutile phase) with average grain sizes varying from 2.94 µm up to 5.81 µm. The average grain size of samples increases with increasing temperature, while the porosity decreases. The effect of microstructure on the dielectric properties has been also studied. The reduction of porosity of samples significantly improves the dielectric parameters (relative dielectric permittivity and loss tangent) in comparison to those of commercial substrates, indicating that the obtained ceramic substrates could be useful in the miniaturization of telecommunication devices.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-21T18:47:39Z
2020-08-21T18:47:39Z
2020
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 FREITAS, A. E. de et al. Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities. Materials, v. 13, n. 2, p. 386, 2020. Disponível em: <https://www.mdpi.com/1996-1944/13/2/386>. Acesso em: 10 mar. 2020.
1996-1944
http://www.repositorio.ufop.br/handle/123456789/12638
https://doi.org/10.3390/ma13020386
identifier_str_mv FREITAS, A. E. de et al. Development and characterization of titanium dioxide ceramic substrates with high dielectric permittivities. Materials, v. 13, n. 2, p. 386, 2020. Disponível em: <https://www.mdpi.com/1996-1944/13/2/386>. Acesso em: 10 mar. 2020.
1996-1944
url http://www.repositorio.ufop.br/handle/123456789/12638
https://doi.org/10.3390/ma13020386
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.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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