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New perovskite-related oxides having high dielectric constant: Ln2Ba2CaZn2Ti3O14 (Ln = La and Pr)

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Abstract

Two new oxides, La2Ba2CaZn2Ti3O14 and Pr2Ba2CaZn2Ti3O14, have been synthesized by the ceramic route at 1100°C. These oxides crystallize in the disordered cubic structure with an ‘a’ lattice parameter of 3.9728 (2) and 3.9448 (5) respectively. These oxides show high dielectric constant (70 and 57) and low loss (0.003 and 0.013 at 100 kHz) for La2Ba2CaZn2Ti3O14 and Pr2Ba2CaZn2Ti3O14 respectively. The dielectric constant is highly stable with frequency and temperature.

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Authors and Affiliations

  1. Department of Chemistry, Indian Institute of Technology, 110 016, Hauz Khas, New Delhi, India

    Pika Jha & Ashok K. Ganguli

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  1. Pika Jha
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  2. Ashok K. Ganguli
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Correspondence to Ashok K. Ganguli.

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Dedicated to Professor C N R Rao on his 70th birthday

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Jha, P., Ganguli, A.K. New perovskite-related oxides having high dielectric constant: Ln2Ba2CaZn2Ti3O14 (Ln = La and Pr). J Chem Sci 115, 431–438 (2003). https://doi.org/10.1007/BF02708234

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  • DOI: https://doi.org/10.1007/BF02708234

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