Budhani, R. C. ; Ruckman, M. W. ; Sabatini, R. L. ; Suenaga, M. ; Welch, D. O. (1990) Critical current density and upper critical field for epitaxial Y2Ba4Cu8O16 films Solid State Communications, 73 (5). pp. 337-340. ISSN 0038-1098
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/003810...
Related URL: http://dx.doi.org/10.1016/0038-1098(90)90433-C
Abstract
Temperature and field dependence of the critical current density (Jc) and upper critical field (Hc2) in epitaxial Y2Ba4Cu8O16 films are reported. Jc (T,H) data are in excellent agreement with a model of thermally activated flux motion in type-II superconductors. The pinning potential varies from 283 to 125 meV for zero to 40 KG fields and the pre-exponential frequency is in the GHz range. A critical comparison of our data with reports on YBa2Cu3O7 indicates that the flux line lattice is more dynamic in Y2Ba4Cu8O16. The anisotropy in the Ginsberg-Landau coherence length deduced from the slope of the Hc2 phase boundary is comparable to that in YBa2Cu3O7.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 5658 |
| Deposited On: | 19 Oct 2010 11:37 |
| Last Modified: | 23 May 2011 07:31 |
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