کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1817908 | 1525726 | 2013 | 5 صفحه PDF | دانلود رایگان |

Bi2Sr2CaCu2O8 thin films have been deposited on MgO single crystal substrates by spin-coating a solution based on 2-ethylhexanoate precursors. Pyrolysis takes place between 200 °C and 450 °C and is accompanied by the release of 2-ethylhexanoic acid, CO2 and H2O vapour. Highly c-axis oriented Bi2Sr2CaCu2O8 films were obtained after heat treatment at 840 °C in air. The highest Tc of 81 K was measured in a 10-layer film. Subsequent post-annealing in Ar and pure O2 did not improve the superconducting properties of the films and resulted in the appearance of Bi2CaCuO5 or Bi2(Sr, Ca)2CuO6 impurities.
► Bi2Sr2CaCu2O8 thin films were prepared on MgO substrates by solution deposition.
► X-ray pure, highly c-axis oriented films were obtained.
► A maximum Tc of 81 K was measured by AC-susceptibility.
► Annealing in O2 or Ar degrades the superconducting properties.
Journal: Physica C: Superconductivity - Volume 486, 15 March 2013, Pages 32–36