Magneto-optical imaging of flux patterns in multifilamentary (BiPb)2Sr2Ca2Cu3Ox composite conductors
- 6 March 1995
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 66 (10) , 1270-1272
- https://doi.org/10.1063/1.113259
Abstract
We present a study of the superconducting morphology of the transport current carrying cross section of a 19‐filament (BiPb)2Ca2Cu3Ox (Bi‐2223) composite conductor using magneto‐optical imaging of magnetic flux patterns. In conjunction with electron microscopy on the same sample this technique allows a unique correlation of superconducting and microstructural properties. Direct evidence for enhanced superconducting properties in platelike regions along the silver/Bi‐2223 interface and for weak properties near the core of the filaments is obtained. Misaligned grain colonies are found to cause an interruption of the superconducting continuity in the filaments.Keywords
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