Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Marcelo Antônio Santos Da Silva"'
Autor:
Selma Elaine Mazzetto, N. D. G. Souza, D.V.M. Paiva, Antonio Sergio Bezerra Sombra, Pierre Basílio Almeida Fechine, Marcelo Antônio Santos Da Silva
Publikováno v:
Journal of Electronic Materials. 51:761-768
Ba5Li2W3O15 (BLWO) electroceramics with different amounts of lithium carbonate (10–15%) were synthesized using the solid-state route. Powder x-ray diffraction (PXRD) and Raman spectroscopy showed the presence of the BaWO4 (BWO) phase in the samples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c41ab0e74bd6d18fce8443354ec0760
https://doi.org/10.1007/s11664-021-09334-4
https://doi.org/10.1007/s11664-021-09334-4
Autor:
Pierre Basílio Almeida Fechine, Antonio Sergio Bezerra Sombra, Poliana Silva, Marcelo Antônio Santos Da Silva
Publikováno v:
Journal of Materials Science: Materials in Electronics. 32:18628-18643
Bismuth layer structured ferroelectric Bi3R2Ti3FeO15 with R = Bi (BFTO), Gd (BGFTO), and Nd (BNFTO) composition were synthesized by solid-state route, and their morphology and dielectric properties were investigated. The BGFTO and BNFTO samples, show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40ebff35d384d7492aa712c2d042425f
https://doi.org/10.1007/s10854-021-06332-4
https://doi.org/10.1007/s10854-021-06332-4
Autor:
R. F. Abreu, Helenilson de O. Barros, Sergei V. Trukhanov, Larissa V. Panina, Wellington V. de Sousa, Antonio Sergio Bezerra Sombra, Charanjeet Singh, Alex Trukhanov, João P.C. do Nascimento, Tallison O. Abreu, José Eduardo Vasconcelos De Morais, Felipe F. do Carmo, Marcelo Antônio Santos Da Silva
Publikováno v:
Ceramics International. 47:15424-15432
This work presents the dielectric properties of YNbO4 (YNO)–TiO2 composites in the microwave range. X-ray diffraction analysis demonstrates that the addition of TiO2 to YNO results in the formation of a Y(Nb0.5Ti0.5)2O6 phase. In the microwave rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31bd8cfcb4f66679ead3bc5bf445ddb0
https://doi.org/10.1016/j.ceramint.2021.02.108
https://doi.org/10.1016/j.ceramint.2021.02.108
Autor:
M. H. Bezerra Junior, R. G. M. Oliveira, Romualdo S. Silva, I. S. Queiroz Júnior, Marcelo Antônio Santos Da Silva, V. L. Bessa, Antonio Sergio Bezerra Sombra, Felipe F. do Carmo, M. S. Pereira, D. B. Freitas, J. E. V. de Morais, Igor F. Vasconcelos, H. D. de Andrade
Publikováno v:
Journal of Materials Science: Materials in Electronics. 32:11607-11615
In the present work, an electroceramic of the perovskite family, BiCu3Ti3FeO12 (BCTFO), was synthesized by the solid-state reaction method. The structural study was performed by X-ray diffraction and Mossbauer and Raman spectroscopy. Electric and die
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0875514604fa1ded3fe7a2c726ae5a8
https://doi.org/10.1007/s10854-021-05768-y
https://doi.org/10.1007/s10854-021-05768-y
Autor:
M. H. Bezerra Junior, Antonio Sergio Bezerra Sombra, R. G. M. Oliveira, J. C. M. Mota, F. F. do Carmo, Marcelo Antônio Santos Da Silva, H. D. de Andrade, J. E. V. de Morais, T. O. Abreu, I. S. Queiroz Júnior
Publikováno v:
Journal of Materials Science: Materials in Electronics. 32:5936-5944
In this work, investigations of the FeNbO4 ceramic matrix (FNO) and TiO2 additions were carried out in 0, 20, 40, 60, and 80% wt. proportions. The material was synthesized using the solid-state reaction method in an energy mill, and the phases were c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d860e96000e070f8770b736a772a9e84
https://doi.org/10.1007/s10854-021-05314-w
https://doi.org/10.1007/s10854-021-05314-w
Autor:
Charanjeet Singh, Sergei V. Trukhanov, L.V. Panina, Antonio Sergio Bezerra Sombra, J. E. V. de Morais, D. C. Souza, R. G. M. Oliveira, Dang-xia Zhou, An.V. Trukhanov, Marcelo Antônio Santos Da Silva, D. X. Gouveia
Publikováno v:
Journal of the Australian Ceramic Society. 57:369-377
This study reports the dielectric and structural characterisation of composites formed by the mixture of a BiVO4 ceramic matrix with ZnO (25, 50, and 75 wt.%) obtained through a solid-state method procedure for applications in the microwave range. X-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4630ac5a3c08c5e7e7da075346480b5
https://doi.org/10.1007/s41779-020-00559-w
https://doi.org/10.1007/s41779-020-00559-w
Autor:
Pierre Basílio Almeida Fechine, Eduardo Albuquerque Araújo, M. S. Pereira, Igor F. Vasconcelos, Marcelo Antônio Santos Da Silva, Antonio Sergio Bezerra Sombra
Publikováno v:
Applied Physics A. 128
Molybdates from A2Mo3O12 family have been widely investigated due to its low sintering temperature, low thermal expansion coefficient, and low dielectric loss. Fe2Mo3O12 (FMO) is an oxide from this family and widely used in the catalytic field. The a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af342de50c54971cb5ef62c31a1fc003
https://doi.org/10.1007/s00339-022-05580-3
https://doi.org/10.1007/s00339-022-05580-3
Autor:
J. C. Sales, F. F. do Carmo, D. B. Freitas, V. L. Bessa, Marcelo Antônio Santos Da Silva, J. E. V. de Morais, Antonio Sergio Bezerra Sombra, D. X. Gouveia, R. G. M. Oliveira
Publikováno v:
Journal of Materials Science: Materials in Electronics. 31:22265-22273
In this work, the electrical properties of Bi4Ti3O12 (BiT) were investigated; those presenting interesting electrical and dielectric properties in the radiofrequency (RF) and microwave (MW) range were analysed. BiT has many applications in telecommun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fcddcfdc1c0a1a6742eee9a7f9867ec
https://doi.org/10.1007/s10854-020-04727-3
https://doi.org/10.1007/s10854-020-04727-3
Autor:
H. D. de Andrade, F. F. do Carmo, J. E. V. de Morais, J. C. Sales, Marcelo Antônio Santos Da Silva, D. X. Gouveia, Antonio Sergio Bezerra Sombra, J. P. C. do Nascimento, I. S. Queiroz Júnior, R. G. M. Oliveira
Publikováno v:
Journal of Electronic Materials. 49:6016-6023
This paper analysed the effects of doping with Pr and Yb on the dielectric and down-conversion luminescence properties in the ceramic matrix LaNbO4. X-ray diffraction analysis showed that no additional phases were present in the materials. Impedance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eddef9dcb94816fb1fd9819b700c367
https://doi.org/10.1007/s11664-020-08339-9
https://doi.org/10.1007/s11664-020-08339-9
Autor:
D. X. Gouveia, G. S. Batista, Dang-xia Zhou, An.V. Trukhanov, D. C. Souza, L.V. Panina, S.V. Trukhanov, R. G. M. Oliveira, Antonio Sergio Bezerra Sombra, Charanjeet Singh, J. E. V. de Morais, Marcelo Antônio Santos Da Silva
Publikováno v:
Journal of Materials Science: Materials in Electronics. 31:13078-13087
In this work, a complex impedance spectroscopy study of bismuth vanadate (BiVO4) ceramics with different additions of ZnO (25, 50, and 75 wt %) was performed. BiVO4 (BVO) was synthesized by the reaction method in solid-state and calcined at 500 °C a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7b26c7afae0854d415d73933aec7b49
https://doi.org/10.1007/s10854-020-03858-x
https://doi.org/10.1007/s10854-020-03858-x