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- W2081957683 abstract "A new superconducting mercury oxycarbonate, Pb0.7Hg0.3Sr4Cu2CO3O7, has been synthesized. This tetragonal phase (a=3.824 Å, c=16.468 Å) consists of an intergrowth of two nonsuperconducting compounds, Sr2CuO2CO3 and Pb0.7Hg0.3Sr2CuO5. It exhibits after optimization a critical temperature of 70 K, with a sharp transition and a superconducting volume fraction of 50%. Its behavior can be compared to that of thallium oxycarbonates previously isolated. This study is completed by a reinvestigation of the 1212 cuprate of the system Hg-Pb-Sr-Ca-Nd-Cu. A superconducting phase with the 1212 structure, similar to that previously obtained but with a significantly different composition, Pb0.7Hg0.3Sr2+xCa0.7Nd0.3-xCu2 O7, has been obtained, with a Tc onset of 100 K. The behavior of the latter is compared with other lead-based 1212 cuprates." @default.
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- W2081957683 date "1994-03-01" @default.
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- W2081957683 title "Lead-mercury-based superconductors. The 1212 cuprate Pb0.7Hg0.3Sr2+xCa0.7Nd0.3-xCu2O7-δ and the new oxycarbonate Pb0.7Hg0.3Sr4Cu2CO3O7" @default.
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- W2081957683 doi "https://doi.org/10.1016/0921-4534(94)90109-0" @default.
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