Strong flux pinning centers in Y-Ba-Cu-O films prepared by chemical vapor deposition
- 9 April 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (15), 1490-1492
- https://doi.org/10.1063/1.103211
Abstract
The Y‐Ba‐Cu‐O film prepared by chemical vapor deposition showed Tc=91.5 K and Bc2 (77.3 K)=60 T defined by zero resistance. The Jc values measured at 77.3 K were 7.8×105 A/cm2 at B=0 and 1.0×105 A/cm2 at 16 T, magnetic fields perpendicular to the c axis. Small disk‐shaped precipitates possibly regarded as strong flux pinning centers in the Y‐Ba‐Cu‐O films were observed using transmission electron microscopy. The evaluation of Jc related to the concentration and configuration of the precipitates was in reasonable agreement with the measured Jc values.Keywords
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