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Influence of Lateral Critical Current Density Distributions on AC Transport Losses for Ag-Sheathed (Bi, Pb)-2223 Multifilamentary Tapes with Different Filament Arrangements

Published online by Cambridge University Press:  18 March 2011

Ryoji Inada ,
Shusaku Sakamoto ,
Pingxiang Zhang ,
Akio Oota  and
Hiroyuki Fujimoto
Ryoji Inada
Affiliation:
Toyohashi University of Technology, 1–1 Tempaku-cho, Toyohashi, Aichi 441–8580, Japan
Shusaku Sakamoto
Affiliation:
Toyohashi University of Technology, 1–1 Tempaku-cho, Toyohashi, Aichi 441–8580, Japan
Pingxiang Zhang
Affiliation:
Toyohashi University of Technology, 1–1 Tempaku-cho, Toyohashi, Aichi 441–8580, Japan
Akio Oota
Affiliation:
Toyohashi University of Technology, 1–1 Tempaku-cho, Toyohashi, Aichi 441–8580, Japan
Hiroyuki Fujimoto
Affiliation:
Railway Technical Research Institute, 2-8-38 Hikari-cho, Kokubunji, Tokyo 185-8540, Japan
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Abstract

The influence of lateral critical current density (Jc) distributions on AC transport losses in self-fields at 77 K have been investigated on the Ag-sheathed (Bi, Pb)-2223 multifilamentary tapes with different filament arrangements. The trapped magnetic field distributions in a remanent state on the tape surface measured by a scanning Hall sensor depend on the filament arrangements and gradually deviate from the calculation results of magnetic profile without any Jc variations in their cross sections. The transport loss values are strongly influenced from the filament arrangements in each tape, although the main contribution to the losses comes by the hysteresis loss in the superconductor. These results are explained by the calculation results of the shape of field-free core and flux-penetration-regions, varying with filament arrangements and local Jc distributions along a width direction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 689: Symposium E – Materials for High-Temperature Superconductor Technologies , 2001 , E5.27
Copyright
Copyright © Materials Research Society 2002

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References

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