Fabrication of Bi-2223 HTS magnet with a superconducting switch

Sang Soo Oh, Hong Soo Ha, Hyun Man Jang, Dong Woo Ha, Rock Kil Ko, Young Kil Kwon, Kang Sik Ryu, Haigun Lee, Benjamin Haid, Yukikazu Iwasa

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)


A test pancake magnet, equipped with a persistent superconducting switch, was fabricated with Bi-2223/Ag-Mg tape. The magnet was operated in persistent mode at 20 and 77 K. For large operating currents that forces the magnet to operate in the flux flow range, the field decays is exponentially with time. A simple circuit model is used to compute field decay time constants. It was also found that Pb-Sn solder joints are unsuitable for persistent mode operation.

Original languageEnglish
Pages (from-to)1828-1831
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1 II
Publication statusPublished - 2001 Mar
Externally publishedYes
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: 2000 Sept 172000 Sept 22


  • Bi-2223
  • HTS
  • Magnet
  • Persistent mode

ASJC Scopus subject areas

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


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