Tl-Ba-Cu-Cu-O superconducting thin films were prepared by magnetron sputtering with postannealing in a reduced oxygen atmosphere. Single-phase Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ can form on the MgO substrate at 800 degrees C under P(O/sub 2/) approximately=0.1 atm. However, the phase formation temperature can be affected by the starting composition of the film. Tl/sub 1/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ phase can be formed by simply lowering the Tl/sub 2/O pressure. The thermal stability of Tl/sub 1/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ phase was studied by resistivity measurements at high temperatures.
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机译：T1-Ba-Cu-Cu-Cu-O超导薄膜是通过磁控溅射和在还原的氧气气氛中进行后退火而制备的。单相Tl / sub 2 / Ba / sub 2 / Ca / sub 2 / Cu / sub 3 / O / sub x /可以在800°C的MgO衬底上形成P（O / sub 2 /）大约= 0.1 atm。但是，相的形成温度会受到膜的起始组成的影响。 Tl / sub 1 / Ba / sub 2 / Ca / sub 2 / Cu / sub 3 / O / sub x /相可以通过简单地降低Tl / sub 2 / O压力来形成。通过高温下的电阻率测量研究了Tl / sub 1 / Ba / sub 2 / Ca / sub 2 / Cu / sub 3 / O / sub x /相的热稳定性。
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