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Dielectric properties of Ba1-xSrxZrO3 (0 ≤ x ≤ 1) nanoceramics developed by citrate precursor route

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Abstract

Nanosized oxides of barium strontium zirconate of general formula Ba1-xSrxZrO3 (0 ≤ x ≤ 1) have been prepared over the entire range of x for the first time by polymeric precursor route using citric acid and ethylene glycol. These solid solutions were investigated by means of powder x-ray diffraction, transmission electron microscopy, scanning electron microscope and Brunauer, Emmett and Teller surface area studies. X-ray diffraction studies reveal the monophasic nature of the powders at 1000 °C. The grain size was found to be in the range of 17–52 nm for all the oxides at 1000 °C. Specific surface area of these solid solutions comes out to be in the range of 49.1–94.4 m2/g. Smallest particle size with highest surface area has been achieved for x = 0.25 and comes out to be 17 nm and 94.4 m2/g respectively. Dielectric constant (ε) and dissipation factor (D) were investigated as a function of frequency and temperature. The room temperature dielectric constant of Ba1-xSrxZrO3 was found to be maximum 105 for x = 0.20 at 1 MHz.

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Acknowledgments

The authors are grateful for the financial support from Tabuk University; Tabuk, Goverment of Saudi Arabia. This research program is an international collaboration between the Tabuk University, Saudi Arabia and Jamia Millia Islamia (Central University), New Delhi 110025 India. The authors also thank to AIIMS, New Delhi for electron microscopic studies. Mohd Ubaidullah thanks to Tabuk University for the research fellowship.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia

    Omar A. Al-Hartomy

  2. Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia

    Omar A. Al-Hartomy

  3. Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi, 110025, India

    Mohd Ubaidullah

  4. Department of Chemistry, Banasthali University, Tonk, Rajasthan, 304022, India

    Dinesh Kumar

  5. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia

    Jamal H. Madani

  6. Department of Chemistry, Nanochemistry Laboratory, Jamia Millia Islamia, New Delhi, 110025, India

    Tokeer Ahmad

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  1. Omar A. Al-Hartomy
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  2. Mohd Ubaidullah
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  3. Dinesh Kumar
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  4. Jamal H. Madani
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  5. Tokeer Ahmad
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Correspondence to Omar A. Al-Hartomy or Tokeer Ahmad.

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Al-Hartomy, O.A., Ubaidullah, M., Kumar, D. et al. Dielectric properties of Ba1-xSrxZrO3 (0 ≤ x ≤ 1) nanoceramics developed by citrate precursor route. Journal of Materials Research 28, 1070–1077 (2013). https://doi.org/10.1557/jmr.2013.40

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