Rx. Wu et al., CORRELATION BETWEEN SURFACE-RESISTANCE OF YBA2CU3O7-DELTA THIN-FILMS AND OXYGEN-PRESSURE DURING DEPOSITION PROCESS, Physica. C, Superconductivity, 282, 1997, pp. 591-592
In this paper, we study the correlation between the depositing oxygen
pressure and surface resistance R-s of YBa2Cu3O7-delta (YBCO) films fa
bricated by pulsed-laser deposition method. It reveals that oxygen pre
ssure has great influence on R-s. In terms of minimum R-s, there exist
s optimum value of oxygen pressure which is different from the optimum
oxygen pressure for maximum T-c. The crystalline orientation and surf
ace morphologies of the films are helpful in understanding the variati
ons of R-s with the oxygen pressure.