ABREU, R.F.

About

PhD in Teleinformatics Engineering (2024) from the Federal University of Ceará (UFC), with an emphasis on Applied Electromagnetism. Master's degree in Telecommunications Engineering (2017) from the Federal Institute of Education, Science and Technology of Ceará (IFCE), with an emphasis on Microwaves and Integrated Optics. Specialist in Teaching Mathematics - 2018 (UFC); Specialist in Professional Education Integrated with Basic Education - 2014 (IFCE). Graduated in Physics (2007) from the Federal University of Ceará (UFC). He has experience in the areas of General and Experimental Physics and Electromagnetism.

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Publications (34)

• Structural evolution and microwave dielectric properties of (1 − x)Sr₂TiSi₂O₈ – xTiO₂ composites for C-band dielectric resonator antennas
  Applied Physics A 2026 DOI: 10.1007/s00339-026-10194-0
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• BaBi4Ti4O15–ZnO composite ceramics: Structural analysis and dielectric behavior targeting S-band antenna applications
  Journal of Physics and Chemistry of Solids 2026 DOI: 10.1016/j.jpcs.2026.113758
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• Enhanced microwave dielectric performance and thermal stability of La2Mo2O9 –TiO2 composites for microwave S- and C-band applications
  Journal of Materials Science: Materials in Electronics 2026 DOI: 10.1007/s10854-026-18444-w
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• Impedance Spectroscopy Study of Mg4Nb2O9 - TiO2 Composites for Ceramic Capacitors Applications
  Advanced Materials Research 2026 DOI: 10.4028/p-9Cl3vf
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• Structural and impedance characterization of BaBi₄Ti₄O₁₅ (BBT)–ZnO composites under temperature variation
  Applied Physics A 2026 DOI: 10.1007/s00339-026-09389-2
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• Study of the structural, morphological and dielectric properties in the sub-UHF region (< 300 MHz) of ZnMoO₄–TiO₂ ceramic composites
  Materials Today Communications 2026 DOI: 10.1016/j.mtcomm.2026.114953
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• Simple and efficient optical fiber recoating procedure
  Materials Letters: X 2025 DOI: 10.1016/j.mlblux.2025.100248
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• Impedance spectroscopy and thermal stability study of the Ba2TiSi2O8–CaTiO3 composites for radio frequency applications
  R. F. Abreu, D. da M. Colares, Paulo Maria de Oliveira Silva +11 more
  Journal of Materials Science: Materials in Electronics 2025 DOI: 10.1007/s10854-025-15615-z
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• Development of a Hydrogen-Sensing Antenna Operating in the Microwave Region for Applications in Safety-Critical Systems
  Chemosensors 2025 DOI: 10.3390/chemosensors13070233
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• Optimization of Microwave Dielectric Properties of (100‐X)BaBi4Ti4O15 – (X)Nb2O5 Composites for Microwave
  physica status solidi (a) 2025 DOI: 10.1002/pssa.202400831
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• Increased thermal stability and dielectric properties of Ba2TiSi2O8-CaTiO3 composites for high frequency applications
  Applied Physics A 2025 DOI: 10.1007/s00339-025-08516-9
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• Effect of Bi2O3 addition on the dielectric properties in radio frequency range of the BiCu3Ti3FeO12 matrix
  Emergent Materials 2025 DOI: 10.1007/s42247-025-01001-2
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• Evaluation of dielectric properties at the radio frequency region of the ZnNb2O6 – CaTiO3 composites
  Helenilson de O. Barros, R. F. Abreu, Francisco Enilton Alves Nogueira

  +10 more

  • Wellington V. de Sousa
  • Felipe Felix do Carmo
  • Tallison Oliveira Abreu
  • J.E.V. de Morais
  • João Paulo Costa do Nascimento
  • +5 more
  Materials Chemistry and Physics 2025 DOI: 10.1016/j.matchemphys.2025.130414
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• Effect OF SrTiO3 addition on the thermal stability OF Ba2TiSi2O8 matrix in the radio frequency range
  D. da M. Colares, R. F. Abreu, F.A.C. Nobrega +7 more
  Ceramics International 2025 DOI: 10.1016/J.CERAMINT.2025.07.315
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• High-sensitive upconversion optical thermometers derived of Y(Nb0.5Ti0.5)2O6:Er3+/Yb3+ phosphors under 808 nm and 980 nm excitation
  Tallison Oliveira Abreu, Felipe Felix do Carmo, João Paulo Costa do Nascimento +9 more
  Applied Physics A: Materials Science and Processing 2025 DOI: 10.1007/s00339-024-08148-5
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• High thermal stability of the microwave dielectric properties of ZnNb2O6 with CaTiO3 addition
  Helenilson de O. Barros, R. F. Abreu, Tallison Oliveira Abreu

  +11 more

  • Wellington V. de Sousa
  • Francisco Enilton Alves Nogueira
  • Felipe Felix do Carmo
  • José E.V. de Morais
  • João Paulo Costa do Nascimento
  • +6 more
  Physica B: Condensed Matter 2024 DOI: 10.1016/j.physb.2024.416547
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• Influence of TiO2 addition on the Mg4Nb2O9 ceramic phase and its application in the radiofrequency region
  Materials Today: Proceedings 2024 DOI: 10.1016/j.matpr.2024.04.089
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• Study of electrical properties with temperature variation by complex impedance spectroscopy (CIS) and effects on the Ba2TiSi2O8–TiO2 matrix
  R. F. Abreu, S. O. Saturno, F. Nobrega +14 more
  Applied Physics A 2024 DOI: 10.1007/s00339-024-07295-z
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• Elevated thermal stability of the dielectric properties of CaMoO4–TiO2 composites under temperature variations
  Francisco Enilton Alves Nogueira, João Paulo Costa do Nascimento, Tallison Oliveira Abreu +9 more
  Journal of Materials Science: Materials in Electronics 2024 DOI: 10.1007/s10854-024-13227-7
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• Evaluation of the effect of the addition of TiO2 on the dielectric behaviour of YNbO4 ceramic using impedance spectroscopy
  Journal of Materials Science: Materials in Electronics 2024 DOI: 10.1007/s10854-024-12315-y
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