TY - JOUR
T1 - Direct observation of flux-creep in high-Tc superconductors using the high-resolution Faraday effect
AU - Koblischka, M. R.
AU - Schuster, Th
AU - Ludescher, B.
AU - Kronmüller, H.
N1 - Funding Information:
We acknowledge valuable discussions with U. EBmann, 1L Griessen and J.G. Lensink. We wish to thank G. Gfintherodt (RWTH .Aachen) for the BiS~CaCuO single crystals and B-Roas and L. Schullz {Siemens Laboratories. Erlangen) for the YBaCuO thin films, and P. Keppler for coating the samples with the magneto-optical active thin-films. This work was financially supported by the Bun-desministerium fiir Forschung und Technologie (Project No. 13 N 57005). This is gratefully acknowledged,.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1992/1/15
Y1 - 1992/1/15
N2 - Using the capability of the high-resolution Faraday effect (HRF) to allow dynamic observations of the Shubnikov phase, we directly observed effects of flux-creep in high -Tc superconductors. In this paper we show measurements on (RE) Ba2Cu3O7-δ with RE=Y, Dy, Gd and on Bi2Sr2CaCu2O8-δ single crystals and also on YBaCuO thin films and sintered materials. Furthermore, this technique enables us also to measure the flux creep locally. From the obtained photographs we determine the time dependence of the total flux in the samples. Using these data and the model of Hagen et al. the effective activation energies have been determined for these materials.
AB - Using the capability of the high-resolution Faraday effect (HRF) to allow dynamic observations of the Shubnikov phase, we directly observed effects of flux-creep in high -Tc superconductors. In this paper we show measurements on (RE) Ba2Cu3O7-δ with RE=Y, Dy, Gd and on Bi2Sr2CaCu2O8-δ single crystals and also on YBaCuO thin films and sintered materials. Furthermore, this technique enables us also to measure the flux creep locally. From the obtained photographs we determine the time dependence of the total flux in the samples. Using these data and the model of Hagen et al. the effective activation energies have been determined for these materials.
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U2 - 10.1016/0921-4534(92)90718-R
DO - 10.1016/0921-4534(92)90718-R
M3 - Article
AN - SCOPUS:0026624246
SN - 0921-4534
VL - 190
SP - 557
EP - 562
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 4
ER -