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Enhanced Microwave Dielectric Properties of the Ba2TiSi2O8 Ceramic by the Addition of TiO2

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Abstract

This work studies the dielectric properties in the microwave region (MW) of the Ba2TiSi2O8 (BTS) ceramic with TiO2 additions and its applications as a dielectric resonator antenna (DRA). In this study, structural characterization through x-ray diffraction (XRD) is performed and the Rietveld refinement is used to confirm the phases formed. Analysis of the morphology of the materials is performed using scanning electron microscopy (SEM). The resonant frequency temperature coefficient (τf) reveals a variation from − 47.0 ppm°C−1 to + 16.5 ppm°C−1. The dielectric properties in the MW region reveal an increase in the dielectric permittivity (εr) and a decrease in the loss tangent (tanδ) of the samples. Numerical simulation shows good fits of the experimental data, with gain and directivity standing out, ranging from 4 dBi to 6 dBi and radiation efficiency below 80%. The results demonstrate that the samples can operate in C-band electronics, Wi-Fi devices, meteorological radar systems, etc.

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Acknowledgments

The authors are grateful to CNPq-Conselho Nacional de Desenvolvimento Científico e Tecnológico (Grant INCT NANO(BIO)SIMES, 402045/2013-0, and 402561/2007-4, Edital MCT/CNPq no 10/2007), CAPES- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Grant Project PNPD), FINEP-Financiadora de Estudos e Projetos (Grant INFRAPESQ-11 and INFRAPESQ-12), the U. S. Air Force Office of Scientific Research (AFOSR) (FA9550-16-1-0127), and the X-Ray Laboratory of the Federal University of Ceará for XRD analysis. The authors are very thankful to Centro Brasileiro de Pesquisas Físicas (Labnano / CBPF) where the SEM analyzes were carried out.

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico (Grant INCT NANO(BIO)SIMES 402045/2013-0, 402561/2007-4),Edital MCT/CNPq no 10/2007), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Grant Project PNPD), Financiadora de Estudos e Projetos (Grant INFRAPESQ-11, INFRAPESQ-12), Air Force Office of Scientific Research (FA9550-16-1-0127).

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Authors and Affiliations

  1. Telecommunication Engineering Department, Federal University of Ceará (UFC), Fortaleza, Ceará, 60755-640, Brazil

    R. F. Abreu, S. O. Saturno, D. da M. Colares & F. E. A Nogueira

  2. LOCEM-Telecommunication and Materials Science and Engineering of Laboratory (LOCEM), Physics Department, Federal University of Ceará (UFC), Campus PICI, P.O. Box 6030, Fortaleza, Ceará, 60455-760, Brazil

    R. F. Abreu, S. O. Saturno, D. da M. Colares, F. A. C. Nobrega, F. E. A Nogueira, J. P. C do Nascimento, S. J. T. Vasconcelos, T. O. Abreu, A. J. M. Sales, M. A. S. Silva & A. S. B. Sombra

  3. Department of Materials Science and Engineering, Federal University of Ceará, Fortaleza, CE, 60440-554, Brazil

    F. R. Silva

  4. Department of Organic and Inorganic Chemistry, Science Center, Federal University of Ceará (UFC), Fortaleza, CE, Brazil

    F. A. C. Nobrega, F. F. do Carmo & T. O. Abreu

  5. Federal Institute of Education, Science and Technology of Ceará, PPGET, Fortaleza, Ceará, Brazil

    J. P. C do Nascimento

  6. LaMFA - Advanced Functional Materials Laboratory, Physics Department, Central Analítica, Federal University of Ceará - UFC, Fortaleza, Ceará, 60440-554, Brazil

    A. Ghosh

  7. State University of Acaraú Valley, Center for Exact Sciences and Technology, Department of Civil Engineering, Sobral, Ceará, Brazil

    J. C. Sales

  8. Group Functional Nanomaterials, Physics Department, Federal University of Sergipe, São Cristóvão, SE, 49100-000, Brazil

    R. S. Silva

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  1. R. F. Abreu
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Abreu, R.F., Saturno, S.O., da M. Colares, D. et al. Enhanced Microwave Dielectric Properties of the Ba2TiSi2O8 Ceramic by the Addition of TiO2. J. Electron. Mater. 52, 8050–8064 (2023). https://doi.org/10.1007/s11664-023-10718-x

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