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The effects of TiO2 addition on the phase formation and microwave dielectric properties of CaLa4Ti5O17 ceramic

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Abstract

The ceramics in (1 − x) CaLa4Ti5O17-xTiO2 (0 ≤ x ≤ 0.1) series were fabricated via conventional solid-state mix oxide sintering route. Their phase and microwave dielectric properties were investigated. Ca0.1La0.60TiO3 formed as the major phase while CaLa4Ti5O17 formed as secondary phase for the composition with x = 0. The addition of TiO2 content suppressed the formation of the parent CaLa4Ti5O17 phase that finally disappeared and Ca0.1La0.60TiO3 was formed as the only phase. The addition of TiO2 increased εr, Q u f o and τf values. In the present study, ε r  ~ 155, Q u f o  ~ 12678 GHz and τ f  ~ 8.9 was achieved for the composition with x = 0.1 sintered at 1450 °C for 4 h.

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Acknowledgements

The authors acknowledge the financial support extended by the Higher Education Commission Islamabad Pakistan under “Pakistan Program for Collaborative Research (PPCR)”. The authors also acknowledge the laboratory support extended by the School of Materials Science and Engineering Wuhan University of Technology, China.

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Authors and Affiliations

  1. Laboratory for Research in Advanced Materials, Department of Physics, University of Science and Technology Bannu, Bannu, 28100, Khyber Pakhtunkhwa, Pakistan

    Abdul Manan & Javed Khan

  2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China

    Abdul Manan, Hanxing Liu, Hua Hao & Atta Ullah

  3. Department of Physics, Islamia College Peshawar, Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

    Arbab Safeer Ahmad

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  1. Abdul Manan
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  2. Hanxing Liu
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  5. Atta Ullah
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Correspondence to Abdul Manan.

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Manan, A., Liu, H., Khan, J. et al. The effects of TiO2 addition on the phase formation and microwave dielectric properties of CaLa4Ti5O17 ceramic. J Mater Sci: Mater Electron 28, 15552–15555 (2017). https://doi.org/10.1007/s10854-017-7443-z

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