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Non-resonant microwave absorption is studied as a function of temperature and composition in superconducting YBa 2 Cu 3 O 7 /CuO ceramic composite samples. In pure YBa 2 Cu 3 O 7 only normal field dependence of the absorption is observed, where as in composites an anomalous non-monotonic field dependence is seen. The results are explained using an extended...
The magnetic field dependent microwave power loss in thin films of YBa 2 Cu 3 O 7-δ is analysed using the technique of non-resonant microwave absorption. The loss is correlated to the surface quality, specifically to the granularity of the film as determined by scanning electron microscopy and atomic force microscopy. We also observe that a granular surface is sensitive...
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