Abstract
In the current study, the solid solution of (Ca
1 −
x
Ba
x
)
4
Ti
3
O
10
, 0.00 ≤
x
≤ 0.075-sintered ceramics were synthesized through traditional mixed oxide solid state technique. The phase evolution, morphological, vibrational, and microwave dielectric properties of synthesized samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and impedance analyzer (1 MHz–3 GHz). The X-ray diffraction (XRD) profile shows the tetragonal I4/mcm crystal symmetry of the system. The surface morphology showed the existence of spherical and round-like micro-size structures. The stretching vibrational mode of O-H and Ti-O was recorded at 600 cm
−1
and normal vibrational mode at 500 cm
−1
, respectively. Using UV-Vis spectroscopy, the optical band gap energy of (Ca
1 −
x
Ba
x
)
4
Ti
3
O
10
-sintered ceramics is found at 1.967, 1.878, 1.749, and 1.613 eV for
x
= 0.00, 0.025, 0.05, and 0.075, respectively. At Optimum microwave dielectric properties of samples were recorded at 3-GHz frequency. The obtaining results have been suitable for the applications of microwave wireless communication system.