Abstract
The high-temperature superconductor, YBa2Cu3O7−x (x = 0.1−0.2) [YBCO], was prepared using an optimized calcination and sintering process. Thin layers of a few microns of this material were deposited on a silver substrate by applying a simplified electrophoretic deposition technique in a suspension of the fine, < 10 μm, superconductor powder in a non-aqueous liquid. To get a uniform and strongly adherent coating, the deposition process is repeated several times, followed by an appropriate sintering procedure. The initially prepared YBCO powder and the coatings produced were characterized for their superconducting properties by X-ray diffraction analysis (XRD), magnetization measurements with a Superconducting Quantum Interference Device (SQUID) and electrical resistivity measurements. By scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) the grain size of the YBCO film, its thickness and impurity content, respectively, were estimated.
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Ochsenkühn-Petropulu, M., Tarantilis, P., Parissakis, G. et al. Preparation and characterization of electrophoretically deposited high-temperature superconductor coatings. Mikrochim Acta 113, 19–27 (1994). https://doi.org/10.1007/BF01243133
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DOI: https://doi.org/10.1007/BF01243133