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Interfaces and surfaces of YBa_2Cu_3O_(7-x)(YBCO)-Ag have been studied by SEM-EDXand AES.No effect of Ag on 123 structure in X-ray diffraction pattern was observedfor 0.4 mol Ag doped YBCO.AES analysis indicated that Ag segregated on surfaceof YBCO and resulted in decrease of YBCO-metal lead resistance.In addition,solutionand segregation of Ag as elemental state were often appeared on interfaces and surfacesof high temperature annealed YBCO,whether elemental Ag or compound Ag_2O andAgNO_3 adopted as doping material.
Interfaces and surfaces of YBa_2Cu_3O_ (7-x) (YBCO) -Ag have been studied by SEM-EDX and AES. No effect of Ag on 123 structure in X-ray diffraction pattern was observed for 0.4 mol Ag doped YBCO.AES analysis shows that Ag segregated on surface of YBCO and resulted in decrease of YBCO-metal lead resistance. In addition, solution and segregation of Ag as elemental state were always on interfaces and surfaces of high temperature annealed YBCO, whether elemental Ag or compound Ag_2O and AgNO_3 adopted as doping material.