ICCK

Obaid Ullah

Department of Physics and Materials Science, University of Science & Technology Bannu

Section 01

Academic Profile

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Section 02

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Section 03

ICCK Publications

Open Access | Research Article | 13 August 2026
Preparation and dielectric properties of BaCa$_4$Nb$_4$TiO$_{17}$ layered Perovskite at microwave frequencies
Journal of Advanced Electronic Materials | Volume 2, Issue 3: 82-88, 2026 | DOI: 10.62762/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/$^{\circ}$... More >

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