Abstract
We have developed a process for synthesizing orthorhombic YBa2Cu3O x (123) superconducting powders by calcination of the precursor powder under reduced total oxygen pressure. Because a single calcination at 800°C for 4 h in flowing oxygen at a pressure of 2 mm Hg results in essentially phase-pure material, total calcination times have been drastically reduced. At liquid nitrogen temperature, sintered pellets made from this powder have critical current densities of ∼1000 A/cm2 in zero applied magnetic field.
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References
Fjellvag P, Karen P, Kjekshus A, Kofstad P and Norby T 1988Acta Chem. Scand. A42 178
Goretta K Cet al 1988Mater. Lett. 7 161
Lay K W 1989J. Am. Ceram. Soc. 72 696
Shi D, Capone D W II, Goudey G T, Singh J P, Zaluzec N J and Goretta K C 1988Mater. Lett. 6 217
Uno N, Enomoto N, Tanaka Y and Takami H 1988Jpn. J. Appl. Phys. 27 L1003
von Stumberg A W, Chen N, Goretta K C and Routbort J L 1989J. Appl. Phys. 66 2079
Wong-Ng W, Roth R S, Swartzendruber L J, Bennet L L, Chiang C K, Beech F and Hubbard C R 1987Adv. Ceram. Mater. 2 565
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Balachandran, U., Poeppel, R.B., Emerson, J.E. et al. Synthesis of ceramic superconductors under low oxygen pressure. Bull. Mater. Sci. 14, 185–188 (1991). https://doi.org/10.1007/BF02747312
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DOI: https://doi.org/10.1007/BF02747312