Abstract
High Jc Bi-2212/Ag composite tape has been fabricated using screen printing followed by partial melting and slow cooling process.
Well-aligned Bi-2212 grains on Ag tape has been confirmed by XRD and SEM. Different quenching temperatures during partial melting and slow cooling process result in different critical current density values in which 600°C quenching gives higher Jc values than that of 825°C quenching, possibly, due to the less microcracks. The highest Jc values obtained is 30,000 A/cm2 at 77K, 0 Tesla.
The aligning mechanism was investigated by using a high temperature XRD. It was understood that Bi-free phases such as (Sr,Ca)CuO2 and (Sr,Ca)2CuO3 are aligned during partial melting stage, providing one of driving forces for alignment of the Bi-2212 during slow cooling process.
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© 1993 Springer-Verlag Tokyo
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Kim, HD., Ko, JW., Lee, SY., Ha, KH., Ahn, JH., Chung, H. (1993). Enhancement in Critical Current Density of Bi-2212/Ag Composite Tape Prepared by Screen Printing and Melt Growth. In: Bando, Y., Yamauchi, H. (eds) Advances in Superconductivity V. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68305-6_168
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DOI: https://doi.org/10.1007/978-4-431-68305-6_168
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68307-0
Online ISBN: 978-4-431-68305-6
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