TITLE

Weak flux pinning at grain boundaries in Ag sheathed Ba2YCu3O6+x tapes

AUTHOR(S)
Osamura, K.; Takayama, T.; Ochiai, S.
PUB. DATE
July 1989
SOURCE
Applied Physics Letters;7/24/1989, Vol. 55 Issue 4, p396
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This letter is concerned with the mechanism controlling the transport critical current measured at 4.2 K. The current densities increased with decreasing the oxide layer thickness of Ag sheathed tapes and reached 1010 A/cm2 at 15 T for the tape with a 15-μm-thick layer. The magnetic field dependence of critical current density in the region between 0.5 and 15 T can be explained in terms of a modified model of the theory by E. J. Kramer [J. Appl. Phys. 44, 1360 (1973)], based on the weak flux pinning along grain boundaries.
ACCESSION #
9832062

 

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