Dependences of AC Loss in Stacked REBa2Cu3Oy Superconducting Tapes on the Interval among Tapes under Perpendicular Magnetic Field

H. Sasa, G. Kawasaki, S. Miura, I. Iwakuma, T. Izumi, T. MacHi, A. Ibi

Research output: Contribution to journalConference articlepeer-review

Abstract

In this study, we focused on the dependence of the AC loss in REBa2Cu3Oy (REBCO, RE = rare earth, Y, Eu, Gd) superconducting tapes stacked perpendicular to the tape face on the interval between the superconducting layers. The AC loss of the 2-layer stacked tapes with various interval in perpendicular field was investigated by pickup-coil method. The AC loss for external applied magnetic field, B m, below the penetration field, B p, increases with increasing the interval. In the case that the ratio of the distance between the neighboring superconducting layer, D, to the width of the tape, w, (D/w) is smaller than 0.1, the AC loss of 2-layer tapes decreased to 1/2 of that of 1-layer tape. On the other hand, in the case of D/w being larger than 0.1, the AC loss of 2-layer tapes was larger than 1/2 and it approached the AC loss of 1-layer tape with increasing D/w. From the result obtained in this study, it is predicted that, for B m below B p, the AC loss of stacked REBCO tapes with large D/w, such as multifilamentary tapes, is larger than the AC loss of stacked non-scribed REBCO tapes. However, for B m above B p: a large AC loss region, it is known that the AC loss of the multifilamentary tapes decreases compared with that of non-scribed tapes. Next step, AC loss of the multifilamentary tapes for B m below B p will be investigated experimentally and theoretically.

Original languageEnglish
Article number012037
JournalJournal of Physics: Conference Series
Volume1293
Issue number1
DOIs
Publication statusPublished - Oct 15 2019
Event31st International Symposium on Superconductivity, ISS 2018 - Tsukuba, Ibaraki, Japan
Duration: Dec 12 2018Dec 14 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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