Superconductivity in multi-phase Mg-B-O compounds

Tatiana Prikhna, Wolfgang Gawalek, Michael Eisterer, Harald W. Weber, Jacques Noudem, Vladimir Sokolovsky, Xavier Chaud, Viktor Moshchil, Myroslav Karpets, Valeriy Kovylaev, Alexandr Borimskiy, Vasiliy Tkach, Artem Kozyrev, Roman Kuznietsov, Jan Dellith, Christa Shmidt, Tetiana Basyuk, Doris Litzkendorf, Friedrich Karau, Ulrich DittrichMichael Tomsic

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


Structures of MgB2-based materials manufactured under pressure (up to 2 GPa) by different methods having high superconducting performance and connectivity are multiphase and contain different Mg-B-O compounds. Some oxygen can be incorporated into MgB2 and boron into MgO structures, MgBx (X=4-20) inclusions contain practically no oxygen. Regulating manufacturing temperature, pressure, introducing additions one can influence oxygen and boron distribution in the materials and thus, affect the formation, amount and sizes of Mg-B-O and MgBx inclusions and changing type of pinning, pinning force and so affect critical current density jc. The boron concentration increase in initial Mg and B mixture allows obtaining sample containing 88.5 wt% of MgB12 with Tc of 37.4 K (estimated magnetically).

Original languageEnglish
Pages (from-to)475-478
Number of pages4
JournalPhysics Procedia
StatePublished - 1 Jan 2012
EventSuperconductivity Centennial Conference, SCC 2011 - The Hague, Netherlands
Duration: 18 Sep 201123 Sep 2011


  • Critical current density
  • Higher magnesium borides
  • Magnesium diboride
  • Nanostructure
  • Pinning force

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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