Superconductivity above 20 K in barium-niobium-oxide compounds
Gasparov V. A., Strukova G. K., Khassanov S. S.
Superconductivity above 20 К has been observed in multiphase bulk samples of a barium-niobium-oxide compound. Preliminary ac susceptibility, electrical, and structural properties of this compound are presented. We believe that this compound may be the basis for a new family of high-temperature superconducting oxides. © 1994 American Institute of Physics.