Abstract
High quality YBa2.Cu3O6 +x(YBCO) superconductive thin films have been fabricated on the SrTiO3(100) substrate using laser molecular beam epitaxy (laser-MBE). The active oxygen source was used, which made the necessary ambient oxygen pressure be 2–3 orders lower than that in pulsed laser deposition (PLD). Tc0 is 85–87 K, and Jc, 1.0 × 106 A/cm2. Atomic force microscopy (AFM) measurements show that no obvious particulates can be observed and the root mean square roughness is 7.8 nm. High stability DC superconducting quantum interference devices (DC-SQUID) was fabricated using this YBCO thin film.
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Chen, F., LÜ, H., Zhao, T. et al. High quality YBCO superconductive thin films fabricated by laser molecular beam epitaxy. Sci. China Ser. A-Math. 44, 947–952 (2001). https://doi.org/10.1007/BF02880145
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DOI: https://doi.org/10.1007/BF02880145