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Author  |
Safar, H.; Durán, C.; Guimpel, J.; Civale, L.; Luzuriaga, J.; Rodriguez, E.; de la Cruz, F.; Fainstein, C.; Schneemeyer, L.F.; Waszczak, J.V. |
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Title |
Logarithmic-to-nonlogarithmic flux-creep transition and magnetic-flux hardening in Bi-Sr-Ca-Cu-O superconducting ceramics |
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Year |
1989 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
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40 |
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10 |
Pages |
7380 |
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Abstract |
A sharp temperature- and field-dependent transition from a logarithmic to a nonlogarithmic flux-creep behavior has been found in Bi-Sr-Ca-Cu-O superconductors. The transition is not followed by any noticeable change in the magnetization. However, vibrating-reed measurements show that it coincides with a strong hardening of the magnetic structure. The transition occurs at fields and temperatures well below the reversibility line. The possible relation to the recently proposed flux lattice melting is discussed. |
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American Physical Society |
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Call Number |
BT @ jguimpel @ 10.1103/PhysRevB.40.7380 |
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627 |
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