Flux pinning in ternary (Nd–Eu–Gd)Ba2Cu3O7−δ: Optimization for the highest pinning
Pradhan, A. K. ; Muralidhar, M. ; Feng, Y. ; Murakami, M. ; Nakao, K. ; Koshizuka, N.
Woodbury, NY : American Institute of Physics (AIP)
Published 2000
Woodbury, NY : American Institute of Physics (AIP)
Published 2000
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
The optimization of high-quality melt-processed ternary (Nd–Eu–Gd)Ba2Cu3O7−δ composite samples has been carried out to achieve the largest pinning. Our results suggest that the interaction between the twin planes and the fine second-phase precipitate forms a strongly pinned entangled vortex liquid in which vortices are correlated along the c axis. This pinned vortex liquid freezes into a glassy state at low temperature rendering high critical current density, Jc. The maximum Jc can be achieved in as-grown optimally annealed twinned sample with second phase precipitate without disturbing the twin influence. © 2000 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |