Crystal Research and Technology
Cryst. Res. Technol. 37 (2002) 834 - Abstract -

T. S. Kayed, I. Ercan*

Faculty of Engineering, Atilim University, 06836 Ankara, Turkey
*Ankara Nuclear Research and Training Center, 06100 Ankara, Turkey

Effect of Magnetic Field and γ Irradiation on the Properties of Tl-2212 Superconducting Tape

The critical temperature and critical current of Tl-2212 superconducting sample in the form of a tape have been studied near Tc under magnetic field and γ irradiation. Tc decreases from 109 to 94 K with increase of magnetic field up to 300 mT. In 77-109 K range, Jc decreases rapidly in low fields up to around 50 mT followed by a very slow decrease in Jc up to 300 mT. Tc of the sample did not change up to 100 MR γ dose and then started to decrease from 109 to 102 K with increase of γ dose up to 800 MR, most of the change taking place in high doses. The critical currents of the sample decreased steadily with γ irradiation up to 600 MR after which no further change was noticed.

Keywords: high-Tc compounds, Tl-based cuprates, γ irradiation, critical currents, transition temperature


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