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Characterization of ferroelectric and superconducting ceramics prepared from precursor carbonates

  • International Conference On Recent Advances In Materials And Processes
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Abstract

The advantages of a new semi-wet method for the synthesis of (Ba, Ca)TiO3 and YBa2Cu3O7 − y powders from precursor carbonates are described. The precursor carbonates are prepared using chemical coprecipitation technique under controlled pH conditions to ensure uniform distribution of Ba+2/Ca+2 and Y+3/Ba+2 ions. It is shown that the powders synthesized by this route possess better chemical homogeneity as compared to those obtained by the conventional ceramic technique involving calcination of a mixture of BaCO3, CaCO3, TiO2 and Y2O3, BaCO3, CuO powders. The behaviour of the ferroelectric (Ba, Ca)TiO3 and the superconducting YBa2Cu3O7 − y ceramics prepared from powders obtained by our method are found to be markedly different from those known for the conventionally prepared ceramics.

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Authors and Affiliations

  1. School of Materials Science and Technology, Banaras Hindu University, 221 005, Varanasi, India

    D Pandey, V S Tiwari, A K Singh & Sangeeta Chaudhry

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  1. D Pandey
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  2. V S Tiwari
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  3. A K Singh
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  4. Sangeeta Chaudhry
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Pandey, D., Tiwari, V.S., Singh, A.K. et al. Characterization of ferroelectric and superconducting ceramics prepared from precursor carbonates. Bull. Mater. Sci. 12, 245–261 (1989). https://doi.org/10.1007/BF02747135

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