Subramanian, M. A. ; Torardi, C. C. ; Gopalakrishnan, J. ; Gai, P. L. ; Calabrese, J. C. ; Askew, T. R. ; Flippen, R. B. ; Sleight, A. W. (1988) Bulk superconductivity up to 122 K in the Tl-Pb-Sr-Ca-Cu-O system Science, 242 (4876). pp. 249-252. ISSN 0036-8075
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Official URL: http://www.sciencemag.org/cgi/content/short/242/48...
Related URL: http://dx.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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Association for the Advancement of Science. |
| ID Code: | 12967 |
| Deposited On: | 11 Nov 2010 08:19 |
| Last Modified: | 03 Jun 2011 05:10 |
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