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Effect of WO3 loading on structural, electrical and dielectric properties of CaCu3Ti4O12 ceramic composites

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Abstract

CaCu3Ti4O12–xWO3 (CCTO–xWO3) (x = 5, 10, 15, 20 wt%) ceramic composites were synthesized using conventional mixed oxide method. The effect of various amounts of WO3 loading on its microstructure, electrical and dielectric properties of CCTO ceramic composites were studied using XRD, FESEM-EDAX, Hall effect and dielectric measurement. XRD analysis revealed that the CCTO–xWO3 ceramic composites have cubic structure and WO3 loading had no effect on its crystal phase structure. The FESEM analyses showed that the samples had a porous structure. It is noted that the porosity of CCTO films increased from 2.97% to 6.11% with 20% wt. WO3 loading. Also, the electrical resistivity and dielectric permittivity of CCTO ceramics was reduced with increasing WO3 loading. Particularly, the CCTO–20 wt% WO3 ceramic composites exhibited the lowest electrical resistivity (81 Ω cm) and dielectric permittivity (486 measured at 1 kHz) but the highest dielectric loss (0.6 measured at 1 kHz). These results have practical implication for fabrication and optimizing of CCTO ceramics for low power loss microelectronics.

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Acknowledgements

The authors acknowledge the research funding (RUI USM 1001/PBAHAN/8014095) from University Sains Malaysia.

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Authors and Affiliations

  1. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia

    Mohsen Ahmadipour, Zainal Arifin Ahmad & Swee-Yong Pung

  2. School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada

    Mohammad Arjmand

  3. School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia

    Mohd Fadzil Ain

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  1. Mohsen Ahmadipour
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  5. Swee-Yong Pung
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Correspondence to Swee-Yong Pung.

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Ahmadipour, M., Arjmand, M., Ain, M.F. et al. Effect of WO3 loading on structural, electrical and dielectric properties of CaCu3Ti4O12 ceramic composites. J Mater Sci: Mater Electron 30, 6806–6810 (2019). https://doi.org/10.1007/s10854-019-00992-z

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  • DOI: https://doi.org/10.1007/s10854-019-00992-z

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