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YBa_2Cu_3O_(7-x)(YBCO) films with co-doping of Ba Ti O_3(BTO) and Y_2O_3 nanostructures were successfully fabricated on La Al O_3(LAO) substrate by metal organic deposition using trifluoroacetates(TFA-MOD). The focus of this study was to optimize the process conditions during the firing heat treatment of high critical current density(J C)-co-doped YBCO films. The effect of the firing temperatures on both the surface morphology and the superconducting properties for the doped YBCO films was systematically studied. According to the X-ray diffraction(XRD) and scanning electron microscopy(SEM) results,the films prepared at 820 and 850 °C show poor electrical performance due to impurity phases and large pores. In contrast, the dense YBCO films prepared at 830 and840 °C with the critical current densities of 10 MA-cm~(-2)(77 K, 0 T) are obtained.
YBa_2Cu_3O_ (7-x) (YBCO) films with co-doping of Ba Ti O_3 (BTO) and Y_2O_3 nanostructures were successfully fabricated on LaAl O_3 (LAO) substrates by metal organic deposition using trifluoroacetates (TFA- this study was to optimize the process conditions during the firing heat treatment of high critical current density (JC) -co-doped YBCO films. The effect of the firing temperatures on both the surface morphology and the superconducting properties for the doped YBCO films was systematically According to the X-ray diffraction (XRD) and scanning electron microscopy (SEM) results, the films prepared at 820 and 850 ° C show poor electrical performance due to impurity phases and large pores. In contrast, the dense YBCO films prepared at 830 and 840 ° C with the critical current densities of 10 MA-cm -2 (77 K, 0 T) are obtained.