Bi-Sr-Ca-Cu-O conductors and magnets at high stress-strain levels

H. W. Weijers, J. M. Yoo, B. Ten Haken, J. Schwartz

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We focus on a react and wind Bi-2223 conductor with a pure silver matrix. The stress-strain-critical current relation is determined for coils with a uniform stress distribution, at 4.2 K and 19 T. Somewhat surprisingly, the coils fail at a Lorentz force induced strain value close to the value for uni-axially loaded straight samples. This implies that bending strain is only partially retained due to the plastic nature of the pure silver matrix. Also, a double-pancake coil with a 15 mm winding thickness, resulting in a non-uniform stress distribution, is tested at 4.2 K and 19 T. The coil current is cycled with increasing peak values and the onset and evolution of critical current degradation in the coil is shown.

Original languageEnglish (US)
Pages (from-to)1160-1164
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume357-360
DOIs
StatePublished - Sep 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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