Enhancement of the Optical and Dielectric Properties at Low Frequency of (Sr1-xCax)5Ti4O13, (0 ≤ x ≤ 0.06) Structure Ceramics

Sara J Ahmed; Asad Ali; Abid Zaman; Aiyeshah Alhodaib; Abdulaziz H Alghtani; Imen Bejaoui; Vineet Tirth; Ali Algahtani; Mohsin Khan; Abdullah; Mohammed Aljohani

doi:10.3390/mi13111824

Enhancement of the Optical and Dielectric Properties at Low Frequency of (Sr_1-xCa_x)₅Ti₄O₁₃, (0 ≤ x ≤ 0.06) Structure Ceramics

Micromachines (Basel). 2022 Oct 26;13(11):1824. doi: 10.3390/mi13111824.

Authors

Sara J Ahmed¹, Asad Ali^{2

3}, Abid Zaman³, Aiyeshah Alhodaib⁴, Abdulaziz H Alghtani⁵, Imen Bejaoui⁶, Vineet Tirth^{7

8}, Ali Algahtani^{7

8}, Mohsin Khan², Abdullah⁹, Mohammed Aljohani¹⁰

Affiliations

¹ Medical Physics Department, Al-Mustaqbal University College, Babylon 51001, Iraq.
² Department of Physics, Government Postgraduate College, Nowshera 24100, Pakistan.
³ Department of Physics, Riphah International University, Islamabad 44000, Pakistan.
⁴ Department of Physics, College of Science, Qassim University, Buraydah 51452, Saudi Arabia.
⁵ Department of Mechanical Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
⁶ Department of Chemistry, College of Arts and Science Sarat Abidah, King Khalid University, Abha P.O. Box 9004, Saudi Arabia.
⁷ Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia.
⁸ Research Center for Advanced Materials Science (RCAMS), King Khalid University Guraiger, P.O. Box 9004, Abha 61413, Saudi Arabia.
⁹ Department of Physics, Government Post Graduate College, Karak 27200, Pakistan.
¹⁰ Department of Chemistry, College of Science, Taif University, Taif 21944, Saudi Arabia.

Abstract

Low loss Ruddlesden-Popper (RP) series, i.e., (Sr_1-xCa_x)₅Ti₄O₁₃, 0.0 ≤ x ≤ 0.06, has been synthesized by a mixed oxide route. In this work, the substitution of Ca²⁺ cation in Sr₅Ti₄O₁₃ sintered ceramics was chosen to enhance the structural, optical, and dielectric properties of the product. It was found that the Ca²⁺ content has significant effects on enhancing the dielectric properties as compared to Mn and glass additions. It was observed that the relative density, band gap energy, and dielectric loss (tangent loss) increase while relative permittivity decreases along with Ca²⁺ content. High relative density (96.7%), low porosity, and high band gap energy (2.241 eV) values were obtained in (Sr_1-xCa_x)₅Ti₄O₁₃, 0.0 ≤ x ≤ 0.06 sintered ceramics. These results will play a key role in the application of dielectric resonators.

Keywords: (Sr1−xCax)5Ti4O13 ceramics; FT-IR optical; XRD; electric properties.

Grants and funding

Taif University Researchers Supporting Project number (TURSP-2020/349), Taif University, Taif, Kingdom of Saudi Arabia and the Deanship of Scientific Research at King Khalid University Abha 61421, Asir, Kingdom of Saudi Arabia Large Groups Project under grant number RGP.2/140/43.