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High quality YBa2Cu3O6+ 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.
High active YBa2Cu3O6 + 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 Tc0 is 85-87 K, and Jc - 1.0x106 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.