ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Meissner effect measurements were performed on a nearly cubic single crystal of YBCO, which exhibited a predominant (110) twin habit, by cooling the crystal from above Tc to 10 K in an applied field H of 10 Oe. A significant difference was observed for H applied parallel and perpendicular to the c axis, but little difference could be seen for H perpendicular and parallel to the twin boundaries. After cooling from above Tc in 10 Oe to 10 K, the field was reduced to zero. The magnetization changed sign, increasing by ∼15 G, which is the value expected for complete flux expulsion by a crystal of this geometry. Magnetization measurements were then made as the temperature was raised back to 100 K. Again, there is a significant difference for the results with H parallel and perpendicular to the c axis, especially above 60 K, with only a small (but possibly meaningful) difference for perpendicular and parallel to the twin boundaries.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.348214
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