TY - JOUR
T1 - MO observation on YBa2Cu3O7-δ coated conductors obtained by TFA-MOD technique
AU - Machi, Takato
AU - Matsuda, Junko
AU - Chikumoto, Noriko
AU - Hirabayashi, Izumi
AU - Tokunaga, Yoshitaka
AU - Kitoh, Yutaka
AU - Aoki, Yuji
AU - Izumi, Teruo
N1 - Funding Information:
This work is supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - We have observed the flux penetration into a high-Tc superconducting YBa2Cu3O7-δ (YBCO) tape by a magneto-optical (MO) imaging technique in order to feed back to the R&D of processing. The MO images of YBCO coated conductor prepared by metal organic deposition using trifluoroacetates (TFA-MOD) showed many weak links such as periodic defect and other serious defects, which were corresponding to the dispersion of critical current along to length direction. Since the combination study of MO imaging with TEM observation revealed the reason of such defects, we could feed back to several processes. The new TFA-MOD tapes prepared by using an advanced process after using many innovations showed a homogeneous flux penetration observed by MO imaging, and then it is confirmed that the process went to higher stage rather than previous one.
AB - We have observed the flux penetration into a high-Tc superconducting YBa2Cu3O7-δ (YBCO) tape by a magneto-optical (MO) imaging technique in order to feed back to the R&D of processing. The MO images of YBCO coated conductor prepared by metal organic deposition using trifluoroacetates (TFA-MOD) showed many weak links such as periodic defect and other serious defects, which were corresponding to the dispersion of critical current along to length direction. Since the combination study of MO imaging with TEM observation revealed the reason of such defects, we could feed back to several processes. The new TFA-MOD tapes prepared by using an advanced process after using many innovations showed a homogeneous flux penetration observed by MO imaging, and then it is confirmed that the process went to higher stage rather than previous one.
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U2 - 10.1016/j.physc.2005.02.159
DO - 10.1016/j.physc.2005.02.159
M3 - Conference article
AN - SCOPUS:25644459942
VL - 426-431
SP - 1078
EP - 1082
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - II
T2 - Proceedings of the 17th Internatioanl Symposium on Superconductivity (ISS 2004) Advances in Superconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -