We have studied the superconducting and structural properties of YBCO thin films and YBCO/STO/YBCO trilayers deposited on (100) SrTiO3substrates by off-axis PLD technique. The as-obtained c-axis oriented YBCO films show an excellent surface free of droplets or other irregularities as well as good structural and superconducting properties with TC(R = 0) = 89 K, Jc= 3 × W A/cm2(at 77 K and zero magnetic field) and the Full Width at Half Maximum (FWHM) of the (005) YBCO rocking curve of about 0.2°. These structural and electrical properties are very close to those of the YBCO films deposited by the conventional PLD on-axis geometry. The TEM cross-sectional image shows that the YBCO/STO/YBCO heterostructure has smooth interfaces and no short-circuits or pinholes were observed. The electron diffraction analysis has revealed that both YBCO top and bottom layer as well as STO interlayer are epitaxially grown with c-axis perpendicular to the substrate. © Società Italiana di Fisica.
|Pages (from-to)||1061 - 1068|
|Number of pages||8|
|Journal||Nuovo Cimento della Societa Italiana di Fisica D - Condensed Matter, Atomic, Molecular and Chemical Physics, Biophysics|
|Publication status||Published - 1997|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
Fabbri, F., Boffa, V., Petrisor, T., Bruzzese, R., & Ciontea, L. (1997). Superconducting and structural properties of YBCO thin films and multilayers prepared by off-axis pulsed laser deposition technique. Nuovo Cimento della Societa Italiana di Fisica D - Condensed Matter, Atomic, Molecular and Chemical Physics, Biophysics, 19(8-9), 1061 - 1068. https://doi.org/10.1007/BF03185392