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, Tae Kuk Ko, Sang Jin Lee, Hong Soo Ha, Sang Soo Oh, Young Kil Kwon

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

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
Volume11
Issue number1 III
DOIs
Publication statusPublished - 2001 Mar 1
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: 2000 Sep 172000 Sep 22

Fingerprint

BSCCO superconductors
Microstructural evolution
Tapes
tapes
Superconducting materials
Critical currents
critical current
Fabrication
fabrication
grain size
twisting
filaments
textures
Textures
irregularities
cracks
alignment
Cracks
Processing

All Science Journal Classification (ASJC) codes

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

Cite this

Lim, Jun Hyung ; Joo, Jinho ; Kim, Jung Gu ; Nah, Wansoo ; Jang, Mihye ; Ko, Tae Kuk ; Lee, Sang Jin ; Ha, Hong Soo ; Oh, Sang Soo ; Kwon, Young Kil. / Fabrication and characterization of microstructural evolution and properties of twisted Bi(Pb)-Sr-Ca-Cu-O superconductor tape. In: IEEE Transactions on Applied Superconductivity. 2001 ; Vol. 11, No. 1 III. pp. 2796-2799.
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abstract = "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.",
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Fabrication and characterization of microstructural evolution and properties of twisted Bi(Pb)-Sr-Ca-Cu-O superconductor tape. / Lim, Jun Hyung; Joo, Jinho; Kim, Jung Gu; Nah, Wansoo; Jang, Mihye; Ko, Tae Kuk; Lee, Sang Jin; Ha, Hong Soo; Oh, Sang Soo; Kwon, Young Kil.

In: IEEE Transactions on Applied Superconductivity, Vol. 11, No. 1 III, 01.03.2001, p. 2796-2799.

Research output: Contribution to journalConference article

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T1 - Fabrication and characterization of microstructural evolution and properties of twisted Bi(Pb)-Sr-Ca-Cu-O superconductor tape

AU - Lim, Jun Hyung

AU - Joo, Jinho

AU - Kim, Jung Gu

AU - Nah, Wansoo

AU - Jang, Mihye

AU - Ko, Tae Kuk

AU - Lee, Sang Jin

AU - Ha, Hong Soo

AU - Oh, Sang Soo

AU - Kwon, Young Kil

PY - 2001/3/1

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N2 - 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.

AB - 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.

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