Structure and superconductivity of BaBiO3 doped with alkali ions


XRD shows that doping BaBiO3 with alkali ions transforms the larger monoclinic parent lattice into a more compact cubic or nearly cubic lattice. This lattice contraction favors the transition from semiconductor to metal. It leads also to superconductivity. Doping BaBiO3 with both K and Rb raises the onset resistivity Tc above those obtained by doping with either K or Rb.

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Correspondence to E. Ruckenstein.

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Tseng, D., Ruckenstein, E. Structure and superconductivity of BaBiO3 doped with alkali ions. Journal of Materials Research 5, 74 (1990).

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