Ink-jet printing of SrTiO sub(3) buffer layers from aqueous solutions

In this work, fully a-axis oriented SrTiO sub(3) thin films were synthesized by ink-jet printing of water-based precursor inks. The developed precursor solution or 'ink' was optimized in terms of rheology, leading to the ejection of single droplets showing a maximum contact angle of 12[deg...

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Bibliographic Details
Published in:Superconductor science & technology 2014-09, Vol.27 (9), p.1-8
Main Authors: Pollefeyt, G, Clerick, S, Vermeir, P, Feys, J, Huhne, R, Lommens, P, Van Driessche, I
Format: Article
Language:English
Subjects:
CURRENT DENSITY
DEPOSITION
Droplets
INKS
Precursors
Printing
SINGLE CRYSTALS
SOLUTIONS
Strontium titanates
SUPERCONDUCTIVITY
Surface layer
Texture
TEXTURES
THIN FILMS
YTTRIUM OXIDE
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Summary:In this work, fully a-axis oriented SrTiO sub(3) thin films were synthesized by ink-jet printing of water-based precursor inks. The developed precursor solution or 'ink' was optimized in terms of rheology, leading to the ejection of single droplets showing a maximum contact angle of 12[degrees] on (100) oriented single crystal LaAlO sub(3) substrates. By using the appropriate ink-jet deposition parameters and thermal treatment, well-textured and dense SrTiO sub(3) films of 130 nm thickness were obtained. The biaxial texture is maintained up to the surface of the films, leading to the formation of (h00)-oriented terraces. As shown by transmission electron microscopy, excellent texture transfer was achieved from the SrTiO sub(3) film to the YBa sub(2)Cu sub(3)O sub(7- delta ) layer deposited by pulsed laser deposition. Outstanding superconducting properties were obtained with critical current densities up to 3.6 MA cm super(-2) in self-field at 77 K, demonstrating that these sustainable SrTiO sub(3) films meet the requirements to be used as growing template for high quality superconducting coatings.
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/27/9/095007