Add time:08/09/2019         Source:sciencedirect.com

A superconducting thallium cuprate oxysulfate of the composition Tl0.5Pb0.5Sr4Cu2(SO4)Oy, (P4/mmm, a = 3.85Å, c = 16.6Å) related to the 1223 type cuprate family has been characterized. Infrared spectra show that the sulfate ion is present as a bidentate ligand as expected from the structure.

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