Works by Sombra, A. S. B.

Results: 93
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    Studies of the temperature coefficient of capacitance (TCC) of a new electroceramic composite: Pb(Fe<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub> (PFN)–Cr<sub>0.75</sub>Fe<sub>1.25</sub>O<sub>3</sub>(CRFO).

    Published in:
    Journal of Materials Science: Materials in Electronics, 2009, v. 20, n. 2, p. 149, doi. 10.1007/s10854-008-9673-6
    By:
    • Freire, F. N. A.;
    • Santos, M. R. P.;
    • Pereira, F. M. M.;
    • Sohn, R. S. T. M.;
    • Almeida, J. S.;
    • Medeiros, A. M. L.;
    • Sancho, E. O.;
    • Costa, M. M.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Enhanced Microwave Dielectric Properties of the Ba<sub>2</sub>TiSi<sub>2</sub>O<sub>8</sub> Ceramic by the Addition of TiO<sub>2</sub>.

    Published in:
    Journal of Electronic Materials, 2023, v. 52, n. 12, p. 8050, doi. 10.1007/s11664-023-10718-x
    By:
    • Abreu, R. F.;
    • Saturno, S. O.;
    • da M. Colares, D.;
    • Silva, F. R.;
    • Nobrega, F. A. C.;
    • Nogueira, F. E. A;
    • do Nascimento, J. P. C;
    • Vasconcelos, S. J. T.;
    • do Carmo, F. F.;
    • Abreu, T. O.;
    • Ghosh, A.;
    • Sales, J. C.;
    • Silva, R. S.;
    • Sales, A. J. M.;
    • Silva, M. A. S.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Impedance and Mössbauer spectroscopy study of BiCu3Ti3FeO12 dielectric matrix.

    Published in:
    Journal of Materials Science: Materials in Electronics, 2021, v. 32, n. 9, p. 11607, doi. 10.1007/s10854-021-05768-y
    By:
    • Freitas, D. B.;
    • Bezerra Júnior, M. H.;
    • Oliveira, R. G. M.;
    • de Morais, J. E. V.;
    • Bessa, V. L.;
    • Carmo, F. F.;
    • Pereira, M. S.;
    • Vasconcelos, I. F.;
    • Silva, M. A. S.;
    • de Andrade, H. D.;
    • Queiroz Júnior, I. S.;
    • Silva, R. S.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    High thermal stability of RF dielectric properties of BiVO4 matrix with added ZnO.

    Published in:
    Journal of Materials Science: Materials in Electronics, 2020, v. 31, n. 16, p. 13078, doi. 10.1007/s10854-020-03858-x
    By:
    • Oliveira, R. G. M.;
    • Souza, D. C.;
    • de Morais, J. E. V.;
    • Batista, G. S.;
    • Silva, M. A. S.;
    • Gouveia, D. X.;
    • Trukhanov, S.;
    • Trukhanov, A.;
    • Panina, L.;
    • Singh, C.;
    • Zhou, D.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Increased thermal stability and dielectric properties of Ba<sub>2</sub>TiSi<sub>2</sub>O<sub>8</sub>-CaTiO<sub>3</sub> composites for high frequency applications.

    Published in:
    Applied Physics A: Materials Science & Processing, 2025, v. 131, n. 5, p. 1, doi. 10.1007/s00339-025-08516-9
    By:
    • Abreu, R. F.;
    • Saturno, S. O.;
    • Colares, D. da M.;
    • Nobrega, F. A. C.;
    • Silva, P. M. O.;
    • do Carmo, F. F.;
    • do Nascimento, J. P. C.;
    • Abreu, T. O.;
    • Sales, J. C.;
    • da Silva, M. A. S.;
    • da Silva, R. S.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Improved radio-frequency dielectric properties of novel high-permittivity BaMoO<sub>4</sub> matrix with CaTiO<sub>3</sub> addition.

    Published in:
    Applied Physics A: Materials Science & Processing, 2024, v. 130, n. 9, p. 1, doi. 10.1007/s00339-024-07800-4
    By:
    • Nobrega, F. A. C.;
    • Abreu, R. F.;
    • Colares, D. da M.;
    • de Freitas, D. B.;
    • da Silva, M. A. S.;
    • do Carmo, F. F.;
    • do Nascimento, J. P. C;
    • Sales, J. C.;
    • Nogueira, F. E. A.;
    • Martins, V. C.;
    • da Silva, R. S.;
    • Abreu, T. O.;
    • Trukhanov, S. V.;
    • Zhou, Di;
    • Singh, C.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Temperature effects on luminescence of YNbO<sub>4</sub>:Er<sup>3+</sup>/Tm<sup>3+</sup>/Yb<sup>3+</sup> white-light upconversion phosphor and sensing behavior based on thermally and non-thermally coupled levels.

    Published in:
    Applied Physics A: Materials Science & Processing, 2024, v. 130, n. 7, p. 1, doi. 10.1007/s00339-024-07632-2
    By:
    • do Carmo, F. F.;
    • do Nascimento, J. P. C.;
    • Abreu, T. O.;
    • Nogueira, F. E. A.;
    • da Silva, M. A. S.;
    • Pavani, K.;
    • Graça, M. P. F.;
    • Jakka, S. K.;
    • da Silva, R. S.;
    • Trukhanov, S. V.;
    • Zhou, Di;
    • Singh, C.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Study of electrical properties with temperature variation by complex impedance spectroscopy (CIS) and effects on the Ba<sub>2</sub>TiSi<sub>2</sub>O<sub>8</sub>–TiO<sub>2</sub> matrix.

    Published in:
    Applied Physics A: Materials Science & Processing, 2024, v. 130, n. 2, p. 1, doi. 10.1007/s00339-024-07295-z
    By:
    • Abreu, R. F.;
    • Saturno, S. O.;
    • Nobrega, F. A. C.;
    • da M. Colares, D.;
    • do Nascimento, J. P. C.;
    • Vasconcelos, S. J. T.;
    • Nogueira, F. E. A.;
    • de Freitas, D. B.;
    • do Carmo, F. F.;
    • Ghosh, A.;
    • Abreu, T. O.;
    • Silva, M. A. S.;
    • Silva, R. S.;
    • Trukhanov, S. V.;
    • Zhou, Di;
    • Singh, C.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Structural, electrical, and impedance properties of Co and Sn doped Ba<sub>0.5</sub>Sr<sub>0.5</sub>Fe<sub>12-2x</sub>O<sub>19</sub> hexaferrite ceramics (0 ≤ x ≤ 1) and their evaluation for antenna application.

    Published in:
    Applied Physics A: Materials Science & Processing, 2023, v. 129, n. 8, p. 1, doi. 10.1007/s00339-023-06819-3
    By:
    • Singh, Charanjeet;
    • Singh, Jasbir;
    • de Morais, J. E. V.;
    • Oliveira, R. G. M.;
    • Do Carmo, F. F.;
    • Silva, M. A. S.;
    • Sombra, A. S. B.;
    • Ammar-Merah, Souad;
    • Joshi, Rajat;
    • Zhou, Di;
    • Trukhanov, Sergei;
    • Panina, Larissa;
    • Trukhanov, Alex
    Publication type:
    Article
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    Improving the microwave dielectric properties of BiCu<sub>3</sub>Ti<sub>3</sub>FeO<sub>12</sub> with the addition of Bi<sub>2</sub>O<sub>3</sub>.

    Published in:
    Journal of Electromagnetic Waves & Applications, 2022, v. 36, n. 3, p. 321, doi. 10.1080/09205071.2021.1968958
    By:
    • Colares, D. da M.;
    • Abreu, R. F.;
    • Silva, F. R.;
    • Abreu, T. O.;
    • Nobrega, F. A. C.;
    • Freitas, D. B.;
    • do Nascimento, J. P. C.;
    • Oliveira, F. G. S.;
    • Vasconcelos, I. F.;
    • Ghosh, A.;
    • Vasconcelos, S. J. T.;
    • Sales, J. C.;
    • Silva, R. S.;
    • Sombra, A. S. B.
    Publication type:
    Article
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    Dielectric characterisation and numerical investigation of SrBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub>–Bi<sub>2</sub>O<sub>3</sub> composites for applications in microwave range.

    Published in:
    Journal of Electromagnetic Waves & Applications, 2020, v. 34, n. 12, p. 1705, doi. 10.1080/09205071.2020.1787231
    By:
    • Abreu, R. F.;
    • Saturno, S. O.;
    • do Nascimento, J. P. C.;
    • Sancho, E. O.;
    • de Morais, J. E. V.;
    • Sales, J. C.;
    • Gouveia, D. X.;
    • de Andrade, H. D.;
    • Queiroz Júnior, I. S.;
    • Sombra, A. S. B.
    Publication type:
    Article
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