We prepared Bi2Sr2CaCu2Oy (Bi-2212) films on substrates of Bi2Sr2CuOy (Bi-2201) single crystals by a rf magnetron sputtering method, where He and O2 mixture sputtering gas and an off-axis geometry were used. The EPMA measurement indicated that the films deposited on the Bi-2201 single crystal had approximately the same composition as those on MgO substrate, which showed a Bi-2212 single-phase.
The film deposited on the Bi-2201 single crystal post-annealed at 500°C for 0.5 h showed a metallic temperature dependent resistance in the normal state and the superconducting transition (Tconset) of about 80 K. Therefore, the Bi-2212 films are considerate to grow on the substrate of the Bi-2201 single crystal.
