Two-dimensional growth of atomically smooth YBCO epitaxial films deposited by PLD in a pulsed oxygen flow
- 1 August 1998
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 11 (8), 737-743
- https://doi.org/10.1088/0953-2048/11/8/005
Abstract
The employment of superconducting thin films as electronic devices seems to be the most probable future application of these materials. For this application, thin films with extremely smooth surface and very good superconducting as well as structural properties are required. We deposited YBCO epitaxial thin films by pulsed laser ablation using a pulsed molecular oxygen flow synchronous with the arrival of the ablated species on the substrate. We studied the dependence of their surface morphology on the deposition pressure and we found an evident improvement in the surface quality by lowering the deposition pressure below mbar. Films grown in these conditions showed surface roughness lower than 1 Å, transition temperatures above 88 K and critical current densities of about at 4.2 K in self-field.Keywords
This publication has 22 references indexed in Scilit:
- Particulates on pulsed-laser deposited YBaCuO filmsPhysica C: Superconductivity and its Applications, 1996
- Mass spectroscopic studies on outgrowth precipitates in laser ablated filmsPhysica C: Superconductivity and its Applications, 1994
- Effect of atomic oxygen on the initial growth mode in thin epitaxial cuprate filmsPhysical Review B, 1994
- Layer-by-layer growth of cuprate thin films by pulsed laser depositionPhysica C: Superconductivity and its Applications, 1993
- Screw dislocation mediated growth of sputtered and laser-ablated YBa2Cu3O7-? filmsZeitschrift für Physik B Condensed Matter, 1992
- Effect of oxidation gases on the formation of Bi2Sr2CuO6 thin filmsApplied Physics Letters, 1990
- I n s i t u growth of DyBa2Cu3O7−x thin films by molecular beam epitaxyApplied Physics Letters, 1990
- Epitaxial growth and properties of YBaCuO thin filmsMaterials Science Reports, 1989
- Low-temperature formation of multilayered Bi(Pb)-Sr-Ca-Cu-O thin films by successive deposition using laser ablationApplied Physics Letters, 1989
- Structural and superconducting properties of orientation-ordered films prepared by molecular-beam epitaxyPhysical Review B, 1987