Structural Evolution and Microwave Dielectric Properties of Ba1- x Sr x Ti4O9, (0.0 ≤ x ≤ 0.06) Ceramics

Asad Ali; Abid Zaman; Sharah A A Aldulmani; Mujahid Abbas; Muhammad Mushtaq; Khalid Bashir; Mongi Amami; Khaled Althubeiti

doi:10.1021/acsomega.1c06212

Structural Evolution and Microwave Dielectric Properties of Ba_{1- x} Sr _x Ti₄O₉, (0.0 ≤ x ≤ 0.06) Ceramics

ACS Omega. 2022 Jan 3;7(2):2331-2336. doi: 10.1021/acsomega.1c06212. eCollection 2022 Jan 18.

Authors

Asad Ali¹, Abid Zaman², Sharah A A Aldulmani³, Mujahid Abbas⁴, Muhammad Mushtaq⁴, Khalid Bashir², Mongi Amami^{5

6}, Khaled Althubeiti⁷

Affiliations

¹ Department of Physics, Government Postgraduate College Nowshera, Nowshera 24100, KP, Pakistan.
² Department of Physics, Riphah International University, Islamabad 44000, Pakistan.
³ Department of Chemistry, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia.
⁴ Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.
⁵ Department of Chemistry College of Sciences, King Khalid University, P.O. Box 9004, Abha 62529, Saudi Arabia.
⁶ Laboratoire des matériaux et de l'environnement pour le développement durable LR18ES10, 9 Avenue Dr. Zoheir Safi, 1006 Tunis, Tunisia.
⁷ Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.

Abstract

The structural, microstructural, and microwave dielectric properties of Ba_1-x Sr _x Ti₄O₉, (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 (ϵ_r = 71.50) and low dielectric loss (tan δ = 0.0006), were obtained.