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Effect of HfN Microadditions on the Microstructure and Superconducting Properties of (Bi,Pb)2Sr2Ca2Cu3O10 + x Ceramics

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Inorganic Materials Aims and scope

Abstract

The effect of ultrafine hafnium nitride additions (0.05–0.2 wt %) on the microstructure, phase composition, density, and superconducting properties (T c and j c) of (Bi,Pb)2Sr2Ca2Cu3O10 + x ceramics is studied. The elemental composition of individual phases is determined, and the magnetic-field distribution in the ceramics is examined. The introduction of hafnium nitride increases the density of the ceramics and improves their microstructural stability at sintering temperatures between 840 and 850°С. The low hafnium solubility in the superconductor offers the possibility of attaining higher magnetizations and 77-K critical current densities.

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Authors and Affiliations

  1. Russian Academy of Sciences, Baikov Institute of Metallurgy and Materials Research, Leninskii pr. 49, Moscow, 119991, Russia

    B. P. Mikhailov & G. S. Burkhanov

  2. Moscow State University, Moscow, 119899, Russia

    P. E. Kazin, V. V. Lennikov & M. V. Makarova

  3. Moscow Engineering Physics Institute, (State University), Kashirskoe sh. 31, Moscow, 115409, Russia

    I. A. Rudnev, A. E. Khodot & A. V. Eremin

  4. State Research Institute for the Rare-Metals Industry, Bol'shoi Tolmachevskii, per. 5, Moscow, 109017, Russia

    A. A. Titov

Authors
  1. B. P. Mikhailov
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  2. G. S. Burkhanov
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  3. P. E. Kazin
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  4. V. V. Lennikov
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  5. M. V. Makarova
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  6. I. A. Rudnev
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  7. A. E. Khodot
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  8. A. V. Eremin
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  9. A. A. Titov
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Mikhailov, B.P., Burkhanov, G.S., Kazin, P.E. et al. Effect of HfN Microadditions on the Microstructure and Superconducting Properties of (Bi,Pb)2Sr2Ca2Cu3O10 + x Ceramics. Inorganic Materials 39, 379–385 (2003). https://doi.org/10.1023/A:1023231916954

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  • DOI: https://doi.org/10.1023/A:1023231916954

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