Abstract
We report the results of comparative studies of field modulated microwave absorption, surface resistance and remanent magnetization performed on YBa 2Cu 3O 7 thin films prepared by rf sputtering, laser ablation and electrophoresis. The microwave absorption results are related to those of remanent magnetization. The role of flux penetration at planar defects or grain boundaries is discussed in relation with the film granularity. A correlation between a small grain size and an enhanced surface resistance is shown.
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