Structural Evolution and Microwave Dielectric Properties of Ba<sub>1–<i>x</i></sub>Sr<i><sub>x</sub></i>Ti<sub>4</sub>O<sub>9</sub>, (0.0 ≤ <i>x</i> ≤ 0.06) Ceramics
Asad Ali, Abid Zaman, Sharah A. Aldulmani, Mujahid Abbas, Muhammad Mushtaq, Khalid Bashir, Mongi Amami, Khaled Althubeiti
Abstract
The structural, microstructural, and microwave dielectric properties of Ba1–xSrxTi4O9, (0.0 ≤ x ≤ 0.06) ceramics samples synthesized by a conventional route were investigated. These structural, microstructural, and dielectric properties were recorded using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) and impedance analyzer spectroscopies. Ti–O octahedral distortion was observed due to Sr2+ addition. The microwave dielectric properties were interrelated with various Sr2+ concentrations. Excellent microwave dielectric properties, i.e., high relative permittivity (ϵr = 71.50) and low dielectric loss (tan δ = 0.0006), were obtained.