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The formation and stability of 80 K phase in the BiPbSrCaCuO system

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Abstract

The formation of Pb-doped 80 K phase from nitrate precursors was studied in the Bi1.84Pb0.34Sr1.91Ca2.00Cu3.04O10.05 system. Sr(Pb, Bi)O3, Ca5Bi14O26, CuO, and CaO were found to be the intermediate compounds reacting to produce 80 K phase between 600 and 820 °C. Synthesis was complete at 800 °C for 24 h. 110 K phase formed at the expense of 80 K phase at temperatures above 820 °C. Partial melting was detected and 80 K and 110 K phases were unstable in the presence of liquid phase. They decomposed to 2201, Cu2O, and (Ca, Sr, Cu) complex oxides. The melting and decomposition were accompanied by oxygen loss.

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  1. W. Zhu

    Present address: IREQ, Hydro Quebec, Canada

Authors and Affiliations

  1. Ceramics Engineering Research Group, Department of Materials Science and Engineering, McMaster University, Ontario, L8S 4L7, Hamilton, Canada

    W. Zhu, C. K. Kuo & P. S. Nicholson

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  1. W. Zhu
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  2. C. K. Kuo
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  3. P. S. Nicholson
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Zhu, W., Kuo, C.K. & Nicholson, P.S. The formation and stability of 80 K phase in the BiPbSrCaCuO system. Journal of Materials Research 11, 1874–1879 (1996). https://doi.org/10.1557/JMR.1996.0238

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  • DOI: https://doi.org/10.1557/JMR.1996.0238

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