Superconducting and structural properties of YBCO thin films and multilayers prepared by off-axis pulsed laser deposition technique

F. Fabbri, V. Boffa, T. Petrisor, R. Bruzzese, L. Ciontea

Research output: Contribution to journalArticle

Abstract

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.
Original languageEnglish
Pages (from-to)1061 - 1068
Number of pages8
JournalNuovo Cimento della Societa Italiana di Fisica D - Condensed Matter, Atomic, Molecular and Chemical Physics, Biophysics
Volume19
Issue number8-9
DOIs
Publication statusPublished - 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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