Research article

Synthesis and sintering of SrTiO3–ZnO ceramics: Role of ZnO content on microstructure and dielectric properties

  • Muhammad Kashif 1
  • Muhammad Salman Habib 1
  • Muhammad Asif Rafiq 1
  • Moaz Waqar 2
  • Muhammad Asif Hussain 3
  • Ayesha Iqbal 1
  • Mehboob Ahmed Abbasi 1
  • Shahid Saeed 1
  • 1 Department of Metallurgical and Materials Engineering, University of Engineering and Technology, G.T Road, Lahore – 54890, Pakistan
  • 2 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 119077, Singapore
  • 3 Department of Metallurgical and Materials Engineering, University of Punjab Lahore, Pakistan
https://doi.org/10.53063/synsint.2023.31138

Abstract

The classical system of combining modern perovskite and wurtzite structure semiconductor materials is used to model the internal structure for the applications of functional novel electronic devices. The structure-property relation has a significant impact on the properties of metal oxides-based functional ceramics. The structural and electrical properties of SrTiO3-xZnO (0 ≤x≤ 10 wt%) ceramics produced via solid-state reaction (SSR) were thoroughly examined. X-ray diffraction (XRD) and scanning electron microscopy confirmed the presence of a mono-phase cubic structure with Pm3̅m space group and resulted in increased density respectively. Complex impedance spectroscopy (CIS) was carried out from 300 to 500 °C temperature within the frequency range of 100 Hz to 1 MHz to study the contribution of grain bulk and grain boundary for impedance behavior. Grain boundaries dominated the overall resistance of the samples and the addition of ZnO in SrTiO3 caused an increase in the overall conductivity. Increasing temperature decreases the resistance of both components, and at higher frequencies that confirms the negative temperature coefficient resistance (NTCR) behavior of the samples. Increasing temperature decreases the relaxation of grain bulk and grain boundary thus predicting the hopping conduction mechanism. The results will be helpful to engineer the microstructure of SrTiO3 based on practical applications such as sensors, actuators, and energy devices.

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Keywords: Semiconductor, Complex impedance spectroscopy, Relaxation time, Hopping conduction, Sensors

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Synthesis and sintering of SrTiO3–ZnO ceramics: Role of ZnO content on microstructure and dielectric properties
Submitted
2023-01-18
Published
2023-03-13
How to Cite
Kashif, M., Habib, M. S., Rafiq, M. A., Waqar, M., Hussain, M. A., Iqbal, A., Abbasi, M. A., & Saeed, S. (2023). Synthesis and sintering of SrTiO3–ZnO ceramics: Role of ZnO content on microstructure and dielectric properties. Synthesis and Sintering, 3(1), 1-13. https://doi.org/10.53063/synsint.2023.31138
Issue
Vol. 3 No. 1 (2023)

Copyright (c) 2023 Muhammad Kashif, Muhammad Salman Habib, Muhammad Asif Rafiq, Moaz Waqar, Muhammad Asif Hussain, Ayesha Iqbal, Mehboob Ahmed Abbasi, Shahid Saeed

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