Rapid low-temperature synthesis of superconducting (Ba,Rb)BiO3 using molten RbOH

M. Kato, S. Shitara, T. Minakawa, T. Noji, Y. Koike

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1 Citation (Scopus)


Polycrystalline samples of perovskite (Ba,Rb)BiO3 have successfully been synthesized in a short time of 2 h at a temperature as low as 310°C by the direct precipitation from molten RbOH. The powder x-ray diffraction pattern has revealed the formation of well-crystallized Ba 1-xRbxBiO3 with 0.31<x<0.40. The appearance of superconductivity has been confirmed by the magnetic susceptibility measurements for all samples. The superconducting transition temperature Tc has a maximum value of ∼28 K at x∼0.37, which is quite similar to that of (Ba,K)BiO3. These results are in good agreement with those of samples obtained by the conventional solid-state reaction method.

Original languageEnglish
Article number052100
JournalJournal of Physics: Conference Series
Issue number5
Publication statusPublished - 2009


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