Influence of middle-energy ion-irradiation on the flux pinning properties of YBCO films: Comparison between different synthesis methods

11th European Conference on Applied Superconductivity

Matsui, H.^1 ; Ogiso, H.^1 ; Yamasaki, H.^1 ; Sohma, M.^1 ; Yamaguchi, I.^1 ; Kumagai, T.^1 ; Manabe, T.^1

National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba

305-8565, Japan^1

关键词: As-deposited films;    Deposition methods;    Gold ion irradiation;    Pinning properties;    Process dependence;    Synthesis method;    Thermal co-evaporation;    YBa2Cu3O7 films;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022019/pdf
DOI  :  10.1088/1742-6596/507/2/022019

来源: IOP

【 摘 要 】

We studied effects of 3-MeV gold-ion irradiation on critical current density (Jc) in YBa2Cu3O7films prepared by three different deposition methods: fluorine-free metal-organic deposition, thermal co-evaporation, and metal-organic chemical-vapor deposition. The three films showed strikingly distinct responses to the extrinsic pinning-center introduction in their Jcvalues in magnetic fields, namely, about 300%, 70%, and no enhancement in the above order. Transmission electron microscopy results suggest that this characteristic process dependence is closely related to the microstructure of the as-deposited films.