On the preparation and structure of the 81 K single phase superconductir in the BiCaSrCuO system

A new and elegant method to synthesize a single phase 2122 compound in the BiCaSrCuO system is described. Electrical resistivity measurements show the superconducting transition temperature ( R = 0) at 81 K. X-ray and neutron diffraction analysis indicate that the single phase compound has cell...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1988-09, Vol.156 (2), p.230-234
Main Authors: Sastry, P.V.P.S.S., Gopalakrishnan, I.K., Sequeira, A., Rajagopal, H., Gangadharan, K., Phatak, G.M., Iyer, R.M.
Format: Article
Language:English
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Summary:A new and elegant method to synthesize a single phase 2122 compound in the BiCaSrCuO system is described. Electrical resistivity measurements show the superconducting transition temperature ( R = 0) at 81 K. X-ray and neutron diffraction analysis indicate that the single phase compound has cell parameters a = 5.362(6) A ̊ , b = 5.443(6) A ̊ and c = 30.77(2) A ̊ and space group Fmmm. Results of neutron diffraction profile analysis show that the orthorhombic distortion is significantly larger than hitherto reported and also indicate possible substitution of Bi for Sr/Ca.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(88)90813-1