AC loss in stacks of Bi-2223/Ag tapes modified with ferromagnetic covers at the edges
Superconductor Science and Technology, cilt.23, sa.10, 2010 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 23 Sayı: 10
- Basım Tarihi: 2010
- Doi Numarası: 10.1088/0953-2048/23/10/105003
- Dergi Adı: Superconductor Science and Technology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Ankara Üniversitesi Adresli: Evet
Özet
We investigated the magnetization loss of stacked Bi-2223/Ag tapes with a ferromagnetic cover on the edges. Such modification has been found recently to reduce the AC loss of a single tape; however, the behavior in a coil winding could be different. With experiments and numerical calculations we show that a ferromagnetic cover on the edges of a superconducting tape could reduce its magnetization loss also when the tapes are arranged in a stack. The effect is weaker for larger numbers of tapes but nevertheless remained significant in a stack of four tapes, which was the maximum number studied here. The effects observed experimentally are nicely explained by the results of numerical calculations. © 2010 IOP Publishing Ltd.