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Critical currents and critical temperatures of oxygenated Tl-2223 bulk superconductors
Author(s): Marek Giebułtowski; Wiesław Marek Woch; Marcin Kowalik; Ryszard Zalecki; Łukasz Gondek; Janusz Niewolski
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Paper Abstract

The thallium based superconductor Tl2Ba2Ca2Cu3Oy was prepared using a three-step calcination and sintering method. Afterwards, the pellet was two times oxygenated in 740oC for 20 h. Taking the absorption part of the a.c. susceptibility measurements the critical current density turned out to be from 20 A/cm2 before oxygenations, through 380 A/cm2 after the first oxygenation to 1120 A/cm2 after the second oxygenation. The critical temperature from the dispersion part of the a.c. susceptibility measurements was determined to be 99.7 K, 112.8 K, and 116.2 K respectively.

Paper Details

Date Published: 14 May 2019
PDF: 6 pages
Proc. SPIE 11054, Superconductivity and Particle Accelerators 2018, 110540K (14 May 2019); doi: 10.1117/12.2525433
Show Author Affiliations
Marek Giebułtowski, AGH Univ. of Science and Technology (Poland)
Wiesław Marek Woch, AGH Univ. of Science and Technology (Poland)
Marcin Kowalik, AGH Univ. of Science and Technology (Poland)
Ryszard Zalecki, AGH Univ. of Science and Technology (Poland)
Łukasz Gondek, AGH Univ. of Science and Technology (Poland)
Janusz Niewolski, AGH Univ. of Science and Technology (Poland)


Published in SPIE Proceedings Vol. 11054:
Superconductivity and Particle Accelerators 2018
Dariusz Bocian; Ryszard S. Romaniuk, Editor(s)

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