Influence of gas flow and improvement of homogeneity on the distribution of critical current density in YBCO coated conductor processed by TFA-MOD method

Kei Shiohara, Kohei Higashikawa, Teppei Kawaguchi, Masayoshi Inoue, Takanobu Kiss, Masateru Yoshizumi, Teruo Izumi

Research output: Contribution to journalConference article

Abstract

Using a scanning Hall-probe microscopy, we have investigated in-plane distribution of critical current density in TFA-MOD processed YBCO coated conductors. We compared the distributions of critical current density for two kinds of coated conductors processed with different directions of gas flow at the calcinations. As a result, it was found that the direction of the gas flow largely influenced the distribution of critical current density. For example, the maximum value of critical current density was 1.5 times higher than the average for a sample processed with a gas flow in width direction. On the other hand, the distribution of critical current density was relatively uniform for the one with a gas flow in axial direction perpendicular to the surface of the conductor. These findings will be very important information for the optimization of the manufacturer processes for the conductors. Actually, a very uniform distribution of critical current density has been observed for a coated conductor produced by an optimized process. This demonstrates a high potential of TFA-MOD processed YBCO coated conductors for practical applications.

Original languageEnglish
Pages (from-to)1637-1642
Number of pages6
JournalPhysics Procedia
Volume36
DOIs
Publication statusPublished - Jan 1 2012
EventSuperconductivity Centennial Conference, SCC 2011 - The Hague, Netherlands
Duration: Sep 18 2011Sep 23 2011

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homogeneity
gas flow
critical current
conductors
current density
roasting
microscopy
optimization
scanning
probes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Influence of gas flow and improvement of homogeneity on the distribution of critical current density in YBCO coated conductor processed by TFA-MOD method. / Shiohara, Kei; Higashikawa, Kohei; Kawaguchi, Teppei; Inoue, Masayoshi; Kiss, Takanobu; Yoshizumi, Masateru; Izumi, Teruo.

In: Physics Procedia, Vol. 36, 01.01.2012, p. 1637-1642.

Research output: Contribution to journalConference article

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AU - Inoue, Masayoshi

AU - Kiss, Takanobu

AU - Yoshizumi, Masateru

AU - Izumi, Teruo

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