Preparation and dielectric properties of BaCa$_4$Nb$_4$TiO$_{17}$ layered Perovskite at microwave frequencies

Ameer Ullah; Sajid Hassan Khan; Obaid Ullah; Sher Abdullah; Noor Syed Khan; Imran Ullah; Abdul Manan; Naved Akhtar

doi:10.62762/JAEM.2026.155204

Article Information

Published in Journal of Advanced Electronic Materials

Volume/Issue Volume 2, Issue 3, 2026

Pages 82-88

Abstract

The layered BaCa$_4$Nb$_4$TiO$_{17}$ perovskite ceramic was synthesized via conventional solid state mixed oxide sintering process. The material was sintered in a range of 1375$^{\circ}$C to 1500$^{\circ}$C for 4~h to develop dense ceramic. Relative density of 97\% was achieved while sintering at 1450$^{\circ}$C for 4~h. The XRD data analysis confirmed single phase layered perovskite and the microstructure comprised well-connected plate-like grains with an average grain size of $\sim$5.46~$\mu$m as determined by ImageJ software. The material offers a good combination of microwave dielectric properties such as $\varepsilon_r \sim 57$, $Q_{uf} \sim 9500$~GHz and $\tau_f \sim 30$~ppm/$^{\circ}$C.

Graphical Abstract

$Preparation and dielectric properties of BaCa$_4$Nb$_4$TiO$_{17}$ layered Perovskite at microwave frequencies$

Keywords

microwave dielectric ceramics layered perovskite BaCa$_4$Nb$_4$TiO$_{17}$ dielectric resonator

Data Availability Statement

Data will be made available on request.

Funding

This work was supported by the Higher Education Commission (HEC), Islamabad, Pakistan, through the National Research Program for Universities (NRPU) under Grant 20-17351/NRPU/R&D/HEC/2021.

Conflicts of Interest

The authors declare no conflicts of interest.

AI Use Statement

The authors declare that no generative AI was used in the preparation of this manuscript.

Ethical Approval and Consent to Participate

Not applicable.

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Cite This Article

APA Style

Ullah, A., Khan, S. H., Ullah, O., Abdullah, S., Khan, N. S., Ullah, I., Manan,A., & Akhtar, N. (2026). Preparation and dielectric properties of BaCa4Nb4TiO17 layered Perovskite at microwave frequencies. Journal of Advanced Electronic Materials, 2(3), 82-88. https://doi.org/10.62762/JAEM.2026.155204

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TY  - JOUR
AU  - Ullah, Ameer
AU  - Khan, Sajid Hassan
AU  - Ullah, Obaid
AU  - Abdullah, Sher
AU  - Khan, Noor Syed
AU  - Ullah, Imran
AU  - Manan, Abdul
AU  - Akhtar, Naved
PY  - 2026
DA  - 2026/08/13
TI  - Preparation and dielectric properties of BaCa$_4$Nb$_4$TiO$_{17}$ layered Perovskite at microwave frequencies
JO  - Journal of Advanced Electronic Materials
T2  - Journal of Advanced Electronic Materials
JF  - Journal of Advanced Electronic Materials
VL  - 2
IS  - 3
SP  - 82
EP  - 88
DO  - 10.62762/JAEM.2026.155204
UR  - https://www.icck.org/article/abs/JAEM.2026.155204
KW  - microwave dielectric ceramics
KW  - layered perovskite
KW  - BaCa$_4$Nb$_4$TiO$_{17}$
KW  - dielectric resonator
AB  - The layered BaCa$_4$Nb$_4$TiO$_{17}$ perovskite ceramic was synthesized via conventional solid state mixed oxide sintering process. The material was sintered in a range of 1375$^{\circ}$C to 1500$^{\circ}$C for 4~h to develop dense ceramic. Relative density of 97\% was achieved while sintering at 1450$^{\circ}$C for 4~h. The XRD data analysis confirmed single phase layered perovskite and the microstructure comprised well-connected plate-like grains with an average grain size of $\sim$5.46~$\mu$m as determined by ImageJ software. The material offers a good combination of microwave dielectric properties such as $\varepsilon_r \sim 57$, $Q_{uf} \sim 9500$~GHz and $\tau_f \sim 30$~ppm/$^{\circ}$C.
SN  - 3070-5649
PB  - Institute of Central Computation and Knowledge
LA  - English
ER  -

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@article{Ullah2026Preparatio,
  author = {Ameer Ullah and Sajid Hassan Khan and Obaid Ullah and Sher Abdullah and Noor Syed Khan and Imran Ullah and Abdul Manan and Naved Akhtar},
  title = {Preparation and dielectric properties of BaCa\$\_4\$Nb\$\_4\$TiO\$\_{17}\$ layered Perovskite at microwave frequencies},
  journal = {Journal of Advanced Electronic Materials},
  year = {2026},
  volume = {2},
  number = {3},
  pages = {82-88},
  doi = {10.62762/JAEM.2026.155204},
  url = {https://www.icck.org/article/abs/JAEM.2026.155204},
  abstract = {The layered BaCa\$\_4\$Nb\$\_4\$TiO\$\_{17}\$ perovskite ceramic was synthesized via conventional solid state mixed oxide sintering process. The material was sintered in a range of 1375\$^{\circ}\$C to 1500\$^{\circ}\$C for 4~h to develop dense ceramic. Relative density of 97\\% was achieved while sintering at 1450\$^{\circ}\$C for 4~h. The XRD data analysis confirmed single phase layered perovskite and the microstructure comprised well-connected plate-like grains with an average grain size of \$\sim\$5.46~\$\mu\$m as determined by ImageJ software. The material offers a good combination of microwave dielectric properties such as \$\varepsilon\_r \sim 57\$, \$Q\_{uf} \sim 9500\$~GHz and \$\tau\_f \sim 30\$~ppm/\$^{\circ}\$C.},
  keywords = {microwave dielectric ceramics, layered perovskite, BaCa\$\_4\$Nb\$\_4\$TiO\$\_{17}\$, dielectric resonator},
  issn = {3070-5649},
  publisher = {Institute of Central Computation and Knowledge}
}

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Copyright © 2026 by the Author(s). Published by Institute of Central Computation and Knowledge. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

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