Influences of Cracking of Coated Layer on Critical Current in Coated Composite Superconductor

S. Ochiai; H. Okuda; Akihiro Toda; Shinji Nagano; M. Sugano; Kozo Osamua; Werner Prusseit

doi:10.4028/www.scientific.net/MSF.706-709.143

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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Influences of Cracking of Coated Layer on Critical...

Influences of Cracking of Coated Layer on Critical Current in Coated Composite Superconductor

Abstract:

Influences of cracking of the coated DyBa₂Cu₃O_̇˽δ˰superconducting layer in composite superconductor under applied tensile strain on V(voltage)-I(current) curve, critical current and n-value were studied experimentally and analytically. The measured variations of V-I curve and critical current with increasing applied strain were described well by the modeling analysis. Also, the variations of shunting current with increasing imposed current and also with extension of cracks were revealed, from which the influences of shunting current on the variation of n-value with current were elucidated.

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Materials Science Forum (Volumes 706-709)

Pages:

143-148

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.143

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Online since:

January 2012

Authors:

S. Ochiai, H. Okuda, Akihiro Toda, Shinji Nagano, M. Sugano, Kozo Osamua, Werner Prusseit

Keywords:

Crack, Critical Current, Current Shunting, DyBCO Composite Superconductor, n-Value

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