A neutron diffraction study of the superconductor, Tl0.5Pb0.5CaSr2Cu2Oy

Ashok K. Ganguli; K.S. Nanjundaswamy; Cnr Rao; A. Sequeira; H. Rajagopal

doi:10.1016/0025-5408(89)90052-4

A neutron diffraction study of the superconductor, Tl0.5Pb0.5CaSr2Cu2Oy

Materials Research Bulletin 24(7): 883-888

Article 1989 English

Abstract

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The structure of Tl0.5Pb0.5CaSr2Cu2Oy (Tc = 90K) has been investigated by neutron diffraction profile analysis and the results discussed in the light of the structures of TlCaBa2CuP2Cy and TlCa0.5Y0.5Ba2Cu2Oy. We find no evidence for disorder in the Tl/Pb sites, but there is some interchange between Ca and Sr sites. The CuO bond distances in these cuprates seem to parallel the variation of the superconducting transition temperature in these cuprates.

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A neutron diffraction study of the superconductor, Tl0.5Pb0.5CaSr2Cu2Oy

Abstract

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A NEUTRON DIFFRACTION STUDY OF A SUPERCONDUCTING CUPRATE OF THE Bi–Ca–Sr–Cu–O SYSTEM CONTAINING TWO Cu-O SHEETS