Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1817499 | Physica C: Superconductivity and its Applications | 2015 | 5 Pages |
Abstract
In order to reveal the influence of crossing angle of one-dimensional pinning centers on angular dependence of critical current density Jc, heavy-ion irradiation was performed to introduce columnar defects (CDs) crossing at ±θi relative to the c-axis into GdBCO coated conductors, where the splay plane consisting of the two directions of CDs is parallel to the current flow direction. For the sample containing CDs with θi = ±15°, a single and sharp peak was observed around B || c in the angular dependence of Jc. When the crossing angle was extended to ±45°, the single Jc-peak became broader, which was a gently-sloping mountain-like shape centered at B || c. For θi = ± 75°, on the other hand, a quite different behavior of Jc from the other irradiated samples was observed, which was analogous to the angular dependence of Jc typical of three dimensional pinning centers.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Y. Furuki, T. Sueyoshi, T. Kai, Y. Iwanaga, T. Fujiyoshi, N. Ishikawa,