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|Title:||Growth mode and microstructure of Ag-doped YBa2Cu3O7-δ thin films prepared by dual beam pulsed-laser deposition|
|Authors:||Xu, S.Y. |
|Source:||Xu, S.Y., Ong, C.K., You, L.P., Li, J., Wang, S.J. (2000-11). Growth mode and microstructure of Ag-doped YBa2Cu3O7-δ thin films prepared by dual beam pulsed-laser deposition. Physica C: Superconductivity and its Applications 341-348 : IV/-. ScholarBank@NUS Repository. https://doi.org/10.1016/S0921-4534(00)01075-3|
|Abstract:||Ag-doped c-axis YBa2Cu3O7-δ thin films were fabricated by using dual-beam pulsed-laser deposition. When a small amount of silver was doped in the film grown at 700°C, the Jc value was obviously enhanced. The temperature dependence of Jc was found proportional to (1-T/Tc0)3/2 at T close to Tc0. In the films grown at 730°C, we observed long bar-like structures with lengths in tens of μm, oriented along or at 45° to the a/b axes of the film. The bars consisted mainly a-axis YBCO grains and a mixture of polycrystalline and amorphous oxides. Defects on substrate surface and growth temperature were found dominating in formation of the bars, which could be attributed to a Ag-assisted diffusion mechanism during the deposition process.|
|Source Title:||Physica C: Superconductivity and its Applications|
|Appears in Collections:||Staff Publications|
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