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Mechanisms of the formation of a bulk superconducting phase MgB2 at high temperatures

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Abstract

The structure of MgB2 samples synthesized from magnesium flakes and a boron powder at temperatures of 900–1000°C has been investigated. It has been found that the samples have “dendrite-like” and layered structures formed as a result of the dissolution of solid boron in liquid magnesium followed by crystallization. The obtained structures have been analyzed within the theoretical concepts of crystallization from melt.

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Authors and Affiliations

  1. Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, ul. Sofii Kovalevskoi 18, Yekaterinburg, 620990, Russia

    E. I. Kuznetsova, Yu. N. Akshentsev, V. O. Esin, S. V. Sudareva, Yu. V. Blinova, M. V. Degtyarev, V. I. Novozhonov & E. P. Romanov

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  1. E. I. Kuznetsova
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  2. Yu. N. Akshentsev
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  3. V. O. Esin
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  4. S. V. Sudareva
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  5. Yu. V. Blinova
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  6. M. V. Degtyarev
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  7. V. I. Novozhonov
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  8. E. P. Romanov
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Corresponding author

Correspondence to S. V. Sudareva.

Additional information

Original Russian Text © E.I. Kuznetsova, Yu.N. Akshentsev, V.O. Esin, S.V. Sudareva, Yu.V. Blinova, M.V. Degtyarev, V.I. Novozhonov, E.P. Romanov , 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 5, pp. 859–865.

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Kuznetsova, E.I., Akshentsev, Y.N., Esin, V.O. et al. Mechanisms of the formation of a bulk superconducting phase MgB2 at high temperatures. Phys. Solid State 57, 873–879 (2015). https://doi.org/10.1134/S1063783415050182

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  • DOI: https://doi.org/10.1134/S1063783415050182

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