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Summary The 123 compound films deposited by pulsed techniques are often characterized by large surface outgrowths that increase their roughness. We have exploited the high reproducibility of our pulsed e-beam channel spark ablation system to deposit a large number of GaBa2 Cu3O6+yc-axis oriented films on NdGaO3 (110) substrates varying systematically the time of deposition (film thickness), quality...
Summary The oxygenation process of the GdBa2 Cu3O(6+y) thin films was investigated by resistivity measurements in the temperature interval 650–1050 K and oxygen pressure 1 mbar. An iteration procedure is proposed for calculating the diffusion relaxation times from the curves of resistance decay with time. All samples showed a linear Arrhenius plot with an activation energy E0 close to 1.5 eV. The...