DocumentCode
973867
Title
Reduction of Error in Magnetic Knife Method to Measure 
Distribution of YBCO Coated Conductor
Author
Maruyama, Osamu ; Miyashita, Munetake ; Sato, Susumu ; Amemiya, Naoyuki ; Saitoh, Takashi ; Yamada, Yutaka ; Shiohara, Yuh
Author_Institution
Fac. of Eng., Yokohama Nat. Univ.
Volume
16
Issue
2
fYear
2006
fDate
6/1/2006 12:00:00 AM
Firstpage
1035
Lastpage
1038
Abstract
The cause of error in the Jc distribution determined by the magnetic knife method is discussed. The YBCO coated conductor sample was displaced from the center of the gap and the Jc distribution of the sample was determined. The error in the determined J c distribution increases with the displacement of the sample. A measurement and numerical analysis of the magnetic field distribution in the gap revealed that the sample was exposed to the magnetic flux density parallel to its wide face. This magnetic flux density component could influence the Jc of the sample, but it was not considered in the magnetic knife method, thus causing an error. Placing the sample at the center of the gap was important for accurate measurements. The influence of the displacement of the sample on the error decreased when the gap was widened
Keywords
barium compounds; critical current density (superconductivity); high-temperature superconductors; magnetic flux; yttrium compounds; Jc distribution; YBCO coated conductor; YBa2Cu3O7-delta; current density; high-temperature superconductors; magnetic field distribution; magnetic flux density component; magnetic knife method; measurement errors; numerical analysis; Conducting materials; Conductors; Density measurement; High temperature superconductors; Magnetic field measurement; Magnetic flux; Magnetic flux density; Superconducting magnets; Superconductivity; Yttrium barium copper oxide; Current density; high-temperature superconductors; magnetic fields; measurement errors;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2005.864322
Filename
1643025
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