Abstract
REBa2Cu3Oy superconductors with rare earth (RE) ions with large radii (RE: La, Nd, Sm, Eu) exhibit relatively low T c due to the presence of RE-Ba solid solution. We have found that this solid solution can be suppressed if these superconductors are melt processed in a reduced oxygen atmosphere. We have also found that critical current densities of these superconductors are higher than those of melt processed YBa2Cu3Oy with fine Y2BaCuO5 inclusions in a high field region. The irreversibility line was also shifted toward the higher H-T region. We believe that flux pinning in these superconductors is ascribable to a finely distributed RE(Ba1−x,REx)2Cu3Oy phase in a good superconductive matrix.
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© 1995 Springer-Verlag Tokyo
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Murakami, M., Yoo, SI., Higuchi, T., Oyama, T., Sakai, N., Tanaka, S. (1995). Strong Flux Pinning In Melt-Grown RE123 (RE: Sm, Eu, Gd) Superconductors. In: Yamafuji, K., Morishita, T. (eds) Advances in Superconductivity VII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68535-7_3
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DOI: https://doi.org/10.1007/978-4-431-68535-7_3
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