DocumentCode :
973867
Title :
Reduction of Error in Magnetic Knife Method to Measure 
Distribution of YBCO Coated Conductor
Distribution of YBCO Coated ConductorAuthor :
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
Link To Document :
