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Dielectric and Electrical Properties of Cobalt Vanadium Doped and Undoped CCTO Ceramics Synthesized via Semi Wet Route

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Abstract

Ceramics of CaCu3Ti4O12 (CCTO) and CaCu3Ti3.95Co0.025V0.025O12 (CCTCVO) were produced using an innovative and cost-effective semi-wet route method. The formation of phases of both CCTO and CCTCVO ceramics were verified by XRD analysis. Their average crystallite sizes were measured to be approximately 60.9 ± 5.0 and 60.7 ± 5.0 nm, respectively. XPS examinations confirmed that each element maintained its proper oxidation state. The composition of the ceramics was further analyzed using EDS. At a temperature of 563 K and a frequency of 100 Hz, the recorded maximum dielectric constant values for CCTO and CCTCVO were 86,776 and 20,479, respectively. A noticeable reduction in the dielectric constant was observed at higher frequencies. The maximum dielectric loss values for the CCTO and CCTCVO ceramics were determined to be 460 and 302 at 523 K, 100 Hz and 553 K, 100 Hz, respectively.

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Acknowledgements

Authors thank Head, Department of Chemistry, Indian Institute of Technology (BHU) Varanasi, India, for the continuation of financial assistance as Teaching Assistantship (T.A.). We are thankful to central instrumental facility IIT BHU for providing XRD, SEM, TEM and XPS facilities.

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The authors declare that they received no grants or other forms of support while preparing this paper.

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Authors and Affiliations

  1. Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, U.P, 221005, India

    Anup Kumar, Vinod Kumar, Manish Kumar Verma, Vishnu Shankar Rai, D. Tiwary & K. D. Mandal

  2. Department of Physics, Indian Institute of Technology (Banaras Hindu University), Varanasi, U.P, 221005, India

    Harish Verma

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  1. Anup Kumar
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  2. Vinod Kumar
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All authors contributed to the initiation and design of the study. Every author has read and given their approval for the final manuscript.

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Correspondence to K. D. Mandal.

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Kumar, A., Kumar, V., Verma, M.K. et al. Dielectric and Electrical Properties of Cobalt Vanadium Doped and Undoped CCTO Ceramics Synthesized via Semi Wet Route. Trans. Electr. Electron. Mater. (2024). https://doi.org/10.1007/s42341-024-00538-z

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