Fabrication and characterization of microstructural evolution and properties of twisted Bi(Pb)-Sr-Ca-Cu-O superconductor tape

Jun Hyung Lim, Jinho Joo, Jung Gu Kim, Wansoo Nah, Mihye Jang, Taekuk Ko, Sang Jin Lee, Hong Soo Ha, Sang Soo Oh, Young Kil Kwon

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1 Citation (Scopus)


We fabricated 37 multi-filament Bi-2223 (BSCCO) superconductor tapes and evaluated the effect of twisting on the microstructural evolution such as grain size, grain alignment, and interface morphology, and on the resulting critical current. Twist pitches of the BSCCO tapes are in the range of 70 to 8 mm and uniformly deformed. It was observed that the grain size and the degree of texture decreased with decreasing pitch, probably due to the formation of the irregular interface between the Ag and the filaments. In addition, the critical current of the tapes decreased with decreasing pitch. For the tape having a twist pitch of 8 mm, approximately 50% of the critical current was maintained compared to that of the untwisted tape. The reduction of critical current may be related to the interface irregularity, smaller grain size, poorer texture and presence of cracks due to the induced strain during the twisting processing.

Original languageEnglish
Pages (from-to)2796-2799
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1 III
Publication statusPublished - 2001 Mar
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: 2000 Sept 172000 Sept 22

Bibliographical note

Funding Information:
Manuscript received August 17, 2000. This wok was fmancially supported by the Korea Research Foundation Jun Hyung Lim, Jinho Joo and Jung-Gu Kim are with school of Metallurgical and Materials Engineering, Sungkyunkwan University, Suwon, Kyounggi, 440-746, Korea (email: ,iinho@,skku.ac.kr) Wansoo Nah is with school of Electrical and Computer Engineering Sungkyunkwan University, Suwon, Kyounggi, 440-746, Korea Mihye Jang and Taekuk KO are with school of Mechanical and Electronic Eng., Yonsei Univmity, Seoul, Korea Sang-Jin Lee is with Uiduk University, Dept. of Elffitrical Eng., Kangdong, Kyongju, Korea Hong-Soo Ha, Sang-Soo Oh, and Young-Kil Kwon are with Applied Superconductivity Laboratory, Korea Electroteohnology Research Institute, Chang-won, 305-600, Korea

Funding Information:
The authors wish to acknowledge the financial support of the Korea Research Foundation made in the program year of (1999)

All Science Journal Classification (ASJC) codes

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


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