Pulsed Laser Deposition of Thin YBCO Films on Faceted YSZ Single Crystal Fibers

11th European Conference on Applied Superconductivity

Snigirev, O.^1 ; Chukharkin, M.^1,2 ; Porokhov, N.^1 ; Rusanov, S.Y.^3 ; Kashin, V.V.^3 ; Tsvetkov, V.B.^3 ; Kalabukhov, A.^1,2 ; Winkler, D.^2

M.V. Lomonosov Moscow State University, Moscow, Russia^1

Chalmers University of Technology, Department of Microtechnology and Nanoscience - MC2, Gothenburge, Sweden^2

Institute of General Physics, Russian Academy of Sciences, Moscow, Russia^3

关键词: Flexible substrate;    High critical temperature;    High-crystalline quality;    Superconducting transitions;    Temperature dependence;    Thin YBa2Cu3O7-x films;    Y2o3 stabilized zro2;    YBCO thin film;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022033/pdf
DOI  :  10.1088/1742-6596/507/2/022033

来源: IOP

【 摘 要 】

Flexible rods of single crystals of 9% Y2O3-stabilized ZrO2(YSZ) were used as substrates for deposition of high-critical temperature superconducting (HTS) thin films. YSZ fibers were prepared by mini-pedestal method with laser heating and had average diameter of 300 micrometers and 30 mm length. X-ray diffraction analysis demonstrated high crystalline quality of obtained fibers and also indicated the presence of 15° deviation of the fiber axis from the [001] YSZ direction. Thin YBa2Cu3O7-xfilms were grown by pulsed laser deposition on YSZ rods using CeO2buffer layer. Films have shown high critical temperature of 90 K with sharp superconducting transition. Critical current density was estimated to about 3×104A/cm2at 80 K. Temperature dependence of critical current density suggests granular structure of films with grain size about several microns. Our results demonstrate feasibility of flexible YSZ fibers coated by HTS thin films for practical use.