Michael Eder, Gerhard Gritzner,
"Uranium doped Thallium-1223 superconductors"
, in Superconductor Science and Technology, Vol. 13, Nummer 9, Seite(n) 1302 - 1305, 9-2000, ISSN: 0953-2048, Uranium doped Thallium-1223 superconductors, M. Eder and G. Gritzner, Supercond. Sci. Techn., 13 (2000) 1302 - 1305, ISSN PII: S0953-2048(00)13538-9
Original Titel:
Uranium doped Thallium-1223 superconductors
Sprache des Titels:
Englisch
Original Kurzfassung:
The effect of incorporating uranium into thallium based superconducting samples has been investigated. Oxidic precursor material of the following formal stoichiometry (Tl0.6Pb0.5)(Sr0.8Ba0.2)2Ca2Cu3UxOy was prepared by a wet chemical route followed by solid state reactions. x values of 0.005, 0.01, 0.02 yielded almost phase pure Tl-1223 phase with Tc(0) values of 114 K. For x of 0.08 and 0.2 considerable amounts of the Tl-1212 phase were found, two-step transitions were observed in the resistance-temperature curves and the Tc(0) values dropped to 107 K and 103 K, respectively. EDX analysis indicated that U was incorporated in the superconducting crystallites. Concentrations of uranium above x = 0.2 did not result in superconducting material. The introduction of uranium into the tetragonal Tl-1223 phase led to a decrease in the c-axis, but did not affect the a-axis.
Sprache der Kurzfassung:
Englisch
Journal:
Superconductor Science and Technology
Volume:
13
Number:
9
Seitenreferenz:
1302 - 1305
Erscheinungsmonat:
9
Erscheinungsjahr:
2000
Notiz zum Zitat:
Uranium doped Thallium-1223 superconductors, M. Eder and G. Gritzner, Supercond. Sci. Techn., 13 (2000) 1302 - 1305, ISSN PII: S0953-2048(00)13538-9
Forschungs-