a-axis oriented YBa2Cu3O7−x thin films on Si with CeO2 buffer layers
- 14 October 1991
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (16) , 2043-2045
- https://doi.org/10.1063/1.106126
Abstract
We have grown a‐axis oriented YBa2Cu3O7−x (YBCO) thin films on Si(100) substrates with (110) oriented insulating buffer layers of cerium dioxide (CeO2) using the pulsed laser deposition technique. The films are highly oriented and textured as determined by θ–2θ x‐ray diffraction, x‐ray pole‐figure scan, scanning electron microscopy, Rutherford backscattering spectroscopy, and ion channeling. No diffusion at the interface has been found at growth temperatures up to 760 °C, indicating the CeO2 is a chemically stable and structurally compatible intermediate material for the growth of YBCO on Si. A zero resistance superconducting transition temperature of 87 K and a critical‐current density (Jc) of 1.5×105 A/cm2 at 75 K have been measured; Jc obtained represents the highest value for the a‐axis oriented YBCO films.Keywords
This publication has 12 references indexed in Scilit:
- Epitaxial MgO on Si(001) for Y-Ba-Cu-O thin-film growth by pulsed laser depositionApplied Physics Letters, 1991
- Epitaxial and Smooth Films of a -Axis YBa 2 Cu 3 O 7Science, 1990
- High critical currents in strained epitaxial YBa2Cu3O7−δ on SiApplied Physics Letters, 1990
- In Situ RHEED Observation of CeO2 Film Growth on Si by Laser Ablation Deposition in Ultrahigh-VacuumJapanese Journal of Applied Physics, 1990
- Crystalline Qualities and Critical Current Densities of As-Grown Ba2YCu3Ox Thin Films on Silicon with Buffer LayersJapanese Journal of Applied Physics, 1990
- Epitaxial growth of CeO2 layers on siliconApplied Physics Letters, 1990
- Effects of beam parameters on excimer laser deposition of YBa2Cu3O7−δApplied Physics Letters, 1990
- Control of growth direction of epitaxial YBaCuO thin films on SrTiO3-substratesSolid State Communications, 1989
- Anisotropic nature of high-temperature superconductivity in single-crystalPhysical Review Letters, 1987
- A semiautomatic algorithm for rutherford backscattering analysisNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1986