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Barium Potassium Bismuth Oxide Synthesis and Physical Properties

  • K. C. Ott (a1), M. F. Hundley (a1), G. H. Kwei (a1), M. P. Maley (a1), M. E. McHenry (a1), E. J. Peterson (a1), J. D. Thompson (a1) and J. O. Willis (a1)...

Abstract

A series of compounds Ba1−xKxBiO3 have been prepared and characterized over the range of compositions ranging from x = 0.3 to 0.5. A neutron powder diffraction analysis has been carried out for the composition x = 0.4 at room temperature and at 10 K. Examination of the superconducting properties as a function of x indicates superconductivity occurs over a narrow range of compositions close to x = 0.4, with Tc of 29 K. Specific heat measurements indicate conventional electron-phonon interactions may play a role in promoting superconductivity in Ba.6K.4BiO3. Magnetization loops and examination of the time dependent magnetization indicate that Ba.6K.4BiO3 has a low value of Jc due to very weak pinning.

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Barium Potassium Bismuth Oxide Synthesis and Physical Properties

  • K. C. Ott (a1), M. F. Hundley (a1), G. H. Kwei (a1), M. P. Maley (a1), M. E. McHenry (a1), E. J. Peterson (a1), J. D. Thompson (a1) and J. O. Willis (a1)...

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