Enhanced flux pinning by phase decomposition in Y-Ba-Cu-O
- 26 March 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (13), 1287-1289
- https://doi.org/10.1063/1.103335
Abstract
Significantly improved flux pinning has been achieved in bulk YBa2Cu3O7−δ superconductor (‘‘123’’ compound) containing fine‐scale defects (<∼50 Å thick). The measured Jc intragrain of ∼105 A/cm2 at 77 K, H=0.9 T is about ten times higher than the typical values for bulk Y‐Ba‐Cu‐O. The improved structure was produced by rapid decomposition at 920 °C of the YBa2Cu4O8 (‘‘124’’) precursor. This new and simple processing route could lead to a commercially viable processing technique for flux‐pinning enhancement in bulk Y‐Ba‐Cu‐O.Keywords
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