Bulk Superconductivity up to 122 K in the Tl-Pb-Sr-Ca-Cu-O System
- 14 October 1988
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 242 (4876), 249-252
- https://doi.org/10.1126/science.242.4876.249
Abstract
New high-temperature superconductors based on oxides of thallium and copper, but not containing barium, have been prepared. A transition temperature (Tc) of about 85 K is found for (Tl0.5Pb0.5) Sr2CaCu2O7 whereas (Tl0.5Pb0.5)Sr2Ca2Cu3O9 has a Tc of about 120 K. Both materials possess tetragonal symmetry with a = 3.80 Å, c = 12.05 Å for (Tl0.5Pb0.5)Sr2CaCu2O7, and a = 3.81 Å, c = 15.23 Å for (Tl0.5Pb0.5)Sr2Ca2Cu3O9. A structure refinement of the latter phase has been carried out with single-crystal x-ray diffraction data.Keywords
This publication has 14 references indexed in Scilit:
- Structure refinements of superconducting Ca and from neutron diffraction dataPhysical Review B, 1988
- (): A New Class of Crystal Structures Exhibiting Volume Superconductivity at up to ≃110 KPhysical Review Letters, 1988
- Structure and superstructure of the superconductor Tl2Ca1Ba2Cu2O8 by neutron and electron diffractionPhysica C: Superconductivity and its Applications, 1988
- Structures of the superconducting oxides Cu and CuPhysical Review B, 1988
- Incipient Modulation in the New High-Temperature Superconductor: CaPhysical Review Letters, 1988
- Bulk Superconductivity at 125 K inPhysical Review Letters, 1988
- Crystal Structure of Tl 2 Ba 2 Ca 2 Cu 3 O 10 , a 125 K SuperconductorScience, 1988
- Crystal structure of the high-temperature superconductor TI2Ba2CaCu2O8Nature, 1988
- Bulk superconductivity at 120 K in the Tl–Ca/Ba–Cu–O systemNature, 1988
- A New High-Temperature Superconductor: Bi 2 Sr 3-x Ca x Cu 2 O 8+yScience, 1988