Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique

Jung Ho Kim, Kyu Tae Kim, Seok Hern Jang, Jinho Joo, Seyong Choi, Wansoo Nah, Hyoungku Kang, Tae Kuk Ko, Hong Soo Ha, Sang Soo Oh, Kang Sik Ryu, Philip Nash

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)


We joined 19-multifilamentary Bi-2223 superconductor tapes and fabricated double-pancake coils by using resistive- and superconducting-joint methods. The critical current ratio (CCR) of the jointed tape and the decay characteristics, joint resistance, and n-value of the pancake coils were evaluated. The joint resistance of the coils was characterized by the field decay technique. It was observed that the CCR was higher in the joined tape made by the resistive-joint method, compared to that by the superconducting-joint method. On the other hand, joint resistance was measured to be 4 orders of magnitude smaller in the superconducting-joint coil; approximately 40% of critical current was retained in the persistent current mode and the joint resistance was 0.18 nΩ. Better and longer retention of the magnetic field in the superconducting-joint coil is believed to be due to the direct connection between the superconducting cores.

Original languageEnglish
Pages (from-to)2992-2995
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 III
Publication statusPublished - 2003 Jun
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9

Bibliographical note

Funding Information:
Manuscript received August 4, 2002. This work was supported by a grant from Center for Applied Superconductivity Technology of 21st Century Frontier R&D Program Funded by the Ministry of Science and Technology, Republic of Korea. J. H. Kim, K. T. Kim, S. H. Jang and J. Joo are with the School of Metallurgical and Materials Engineering, SungKyunKwan University, Suwon, Republic of Korea (e-mail: S. Choi and W. Nah are with the School of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Republic of Korea. H. Kang and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea. H.-S. Ha, S.-S. Oh and K.-S. Ryu are with the Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute. Changwon, Republic of Korea. P. Nash is with the Thermal Processing Technology Center, Illinois Institute of Technology, Chicago, IL 60616 USA. Digital Object Identifier 10.1109/TASC.2003.812049

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique'. Together they form a unique fingerprint.

Cite this