Budhani, R. C. ; Willis, J. O. ; Suenaga, M. ; Maley, M. P. ; Coulter, J. Y. ; Safar, H. ; Ullmann, J. L. ; Haldar, P. (1997) Studies of flux pinning by proton-induced fission tracks in multifilamentary tapes of (Bi,Pb)2Sr2Ca2Cu3O10/Ag superconductors Journal of Applied Physics, 82 (6). No PP. Given.. ISSN 0021-8979
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Official URL: http://jap.aip.org/resource/1/japiau/v82/i6/p3014_...
Related URL: http://dx.doi.org/10.1063/1.366139
Abstract
The effects of proton-induced linear defects on the dissipationless flow of current in multifilamentary Ag-sheathed tapes of (Bi,Pb)2Sr2Ca2Cu3O10 superconductors in the temperature range of 55-77 K are reported. Randomly oriented columnar defects of estimated areal density 5×1010/cm2 produced by 800 MeV proton-induced fission fragments provide substantial enhancement of critical currents of these tapes. Furthermore, these defects are more isotropic flux pinning centers than high-energy heavy ion irradiation-induced columnar defects. However, there is a tradeoff between enhanced pinning and the deleterious effects of radiation damage at higher proton fluences. It is shown that some of the global damage caused by the products of fission can be repaired by a suitable heat treatment of the samples.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Bismuth Compounds; Lead Compounds; Strontium Compounds; Calcium Compounds; High-Temperature Superconductors; Superconducting Tapes; Flux Pinning; Proton Effects; Multifilamentary Superconductors; Critical Currents; Heat Treatment; High-TC Superconductors; Magnetic Flux; Bismuth Oxides; Lead Oxides; Strontium Oxides; Calcium Oxides; Copper Oxides; Silver; Superconducting Wires; Crystal Defects; Fission Fragments; Proton Beams; Radiation Effects |
| ID Code: | 77240 |
| Deposited On: | 10 Jan 2012 14:15 |
| Last Modified: | 10 Jan 2012 14:15 |
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