Abstract
A considerably large transport critical current density Jc (1.2ȕ105 A/cm2 at 4.2 K and 15 T) was observed for the superconducting Ba-Y-Cu-O thin films prepared by an rf sputtering method. In association with such a large Jc, the hysteresisof Jc against the applied magnetic field was smaller compared to that in bulk samples prepared by a solid phase reaction method. It was considered that a fairly smooth morphology of grainboundaries in the thin films improved superconducting properties. The hysteresis of Jcwas discussed on the basis of the weak link model.
Original language | English |
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Pages (from-to) | L628-L630 |
Journal | Japanese journal of applied physics |
Volume | 28 |
Issue number | 4 A |
DOIs | |
Publication status | Published - 1989 Apr |
Externally published | Yes |
Keywords
- Ba-Y-Cu-O, transport critical current density
- Film
- Hysteresis
- Oxide superconductor
- Rf sputtering
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)