Markus Kühberger, Gerhard Gritzner,
"The influence of zinc on Tl-1223 superconductors"
, in Physica C: Superconductivity, Vol. 390, Nummer 3, Seite(n) 263 - 269, 2003, ISSN: 0921-4534, The influence of zinc on Tl-1223 superconductors,
Markus Kühberger and Gerhard Gritzner,
Physica C, 390 (2003) 263- 269
Original Titel:
The influence of zinc on Tl-1223 superconductors
Sprache des Titels:
Englisch
Original Kurzfassung:
The influence of Zn doping on the physical and electrical properties of the Tl-1223 phase has been investigated for samples with the composition (Tl0.5Pb0.5)(Sr0.9Ba0.1)2Ca2(Cu1-xZnx)3O8+d (x = 0; 0.01; 0.05 and 0.1). Sr-Ba-Ca-Cu-Zn containing precursor materials were prepared via malic acid gels followed by a calcination step at 900 °C. Tl2O3 and PbO were added by co-milling. Sintering in oxygen atmosphere yielded high-quality superconducting material. Oxygen annealing, re-grinding and re-sintering improved the electrical properties, leading to critical temperatures (Tc(0)) of 117 K and critical current densities up to 3 800 A cm-2 at 77 K for bulk phase material. The addition of Zn increased the content of the Tl-1212 phase, changed the microstructure, decreased the transition temperature slightly and reduced the critical current density at 77 K.
Sprache der Kurzfassung:
Englisch
Englische Kurzfassung:
The influence of Zn doping on the physical and electrical properties of the Tl-1223 phase has been investigated for samples with the composition (Tl0.5Pb0.5)(Sr0.9Ba0.1)2Ca2(Cu1-xZnx)3O8+d (x = 0; 0.01; 0.05 and 0.1). Sr-Ba-Ca-Cu-Zn containing precursor materials were prepared via malic acid gels followed by a calcination step at 900 °C. Tl2O3 and PbO were added by co-milling. Sintering in oxygen atmosphere yielded high-quality superconducting material. Oxygen annealing, re-grinding and re-sintering improved the electrical properties, leading to critical temperatures (Tc(0)) of 117 K and critical current densities up to 3 800 A cm-2 at 77 K for bulk phase material. The addition of Zn increased the content of the Tl-1212 phase, changed the microstructure, decreased the transition temperature slightly and reduced the critical current density at 77 K.
Journal:
Physica C: Superconductivity
Volume:
390
Number:
3
Seitenreferenz:
263 - 269
Erscheinungsjahr:
2003
Notiz zum Zitat:
The influence of zinc on Tl-1223 superconductors,
Markus Kühberger and Gerhard Gritzner,
Physica C, 390 (2003) 263- 269
Forschungs-