| Title: | Thermal stability and annealing of columnar defects in Bi₂Sr₂Ca₁Cu₂O₈/Ag superconductor |
| Author: | Thompson, J. R. ; Paul, David ; Wang, Z. L. (Zhong Lin) ; Kroeger, D. M. ; Christen, D. K. |
| Abstract: | This work establishes the stability at elevated temperatures of columnar defects, artificially formed in the Bi-based cupric oxide superconductor Bi₂Sr₂Ca₁Cu₂O₈ for enhanced vortex pinning. Isochronal anneals, conducted in air, led to losses of critical current density in two stages. The defects were relatively stable up to ~ 550 °C, where second stage annealing began; above this, the pinning diminished rapidly. The recrystallization and loss of columnar defects were corroborated by transmission electron microscopy. |
| Description: |
©1995 American Institute of Physics. The electronic version of this article is the complete one and can be found online at: http://link.aip.org/link/?APPLAB/67/1007/1 DOI:10.1063/1.114712 |
| Type: | Article |
| URI: | http://hdl.handle.net/1853/27094 |
| ISSN: | 0003-6951 |
| Citation: | Applied Physics Letters, 67 (1995) 1007-1009 |
| Date: | 1995-08-14 |
| Contributor: |
Oak Ridge National Laboratory
University of Tennessee, Knoxville. Dept. of Physics |
| Publisher: |
Georgia Institute of Technology
American Institute of Physics |
| Subject: |
Bismuth oxides
Strontium oxides Calcium oxides Copper oxides High-TC superconductors Annealing Magnetic flux Vortices Crystal defects Critical current Recrystallization Transmission electron microscopy |
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| 1995-02-95_APL_1.pdf | 172.9Kb |
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