| Campo DC | Valor | Lengua/Idioma |
|---|
| dc.contributor.author | Almeida, G. N. | - |
| dc.contributor.author | Souza, Rodrigo Nunes de | - |
| dc.contributor.author | Lima, L. F. S. | - |
| dc.contributor.author | Mohallem, Nelcy Della Santina | - |
| dc.contributor.author | Silva, Edson Paulo da | - |
| dc.contributor.author | Silva, Alysson Martins Almeida | - |
| dc.date.accessioned | 2024-07-26T10:58:55Z | - |
| dc.date.available | 2024-07-26T10:58:55Z | - |
| dc.date.issued | 2023-04-11 | - |
| dc.identifier.citation | ALMEIDA, G. N. et al. The influence of the synthesis method on the characteristics of BaTiO3. Materials, [S. l.], v. 16, n. 8, 3031, 2023. DOI: https://doi.org/10.3390/ma16083031. Disponível em: https://www.mdpi.com/1996-1944/16/8/3031. Acesso em: 09 jul. 2024. | pt_BR |
| dc.identifier.uri | http://repositorio.unb.br/handle/10482/49206 | - |
| dc.language.iso | eng | pt_BR |
| dc.publisher | MDPI | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.title | The influence of the synthesis method on the characteristics of BaTiO3 | pt_BR |
| dc.type | Artigo | pt_BR |
| dc.subject.keyword | Titanato de bário | pt_BR |
| dc.subject.keyword | Processos sol-gel | pt_BR |
| dc.subject.keyword | Propriedades elétricas | pt_BR |
| dc.rights.license | © 2023 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/license s/by/4.0/). | pt_BR |
| dc.identifier.doi | https://doi.org/10.3390/ma16083031 | pt_BR |
| dc.description.abstract1 | In this work, barium titanate powders were produced by sol-gel and sol-precipitation
methods from metal alkoxides. In the sol-gel method, tetraisopropyl orthotitanate was mixed with
2-propanol, acetic acid and barium acetate and the gel samples obtained were calcined at 600 °C,
800 °C and 1000 °C. Through the sol-precipitation method, tetraisopropyl orthotitanate was mixed
with acetic acid and deionized water and precipitated by addition of a concentrated solution of
KOH. The products were calcined at various temperatures and the microstructural and dielectric
properties of BaTiO3 prepared for the two processes were analyzed and compared. The result of
these analyzes allowed to observe in the samples produced by the sol-gel method an increase in the
tetragonal phase and the dielectric constant (15 – 50 at 20 kHz) with increasing temperature, while
the sample obtained by sol precipitation was cubic. The presence of BaCO3 is more evident in the
sample produced by sol-precipitation and the band gap of the products obtained did not show
significant variation, changing the synthesis method (3.363 - 3.594 eV). | pt_BR |
| dc.identifier.orcid | https://orcid.org/0000-0002-6200-3253 | pt_BR |
| dc.identifier.orcid | https://orcid.org/0000-0002-9094-4536 | pt_BR |
| dc.contributor.affiliation | University of Brasília, Faculty of Technology, Mechatronic Engineering Department | pt_BR |
| dc.contributor.affiliation | University of Brasília, Faculty of Technology, Mechanical Engineering Department | pt_BR |
| dc.contributor.affiliation | Federal University of Minas Gerais, Chemistry Department | pt_BR |
| dc.contributor.affiliation | Federal University of Minas Gerais, Chemistry Department | pt_BR |
| dc.contributor.affiliation | University of Brasília, Faculty of Technology, Mechanical Engineering Department | pt_BR |
| dc.contributor.affiliation | University of Brasília, Faculty of Technology, Mechanical Engineering Department | pt_BR |
| dc.description.unidade | Faculdade de Tecnologia (FT) | pt_BR |
| dc.description.unidade | Departamento de Engenharia Elétrica (FT ENE) | pt_BR |
| Aparece en las colecciones: | Artigos publicados em periódicos e afins
|
