Abstract

GARCES, PAULA  and  MARINO, ALVARO. PREPARATION OF YBCO SUPERCONDUCTING THICK FILMS ON SINGLE CRYSTAL MgO (100) AND METALLIC Ni%5W SUBSTRATES BY THE DIP-COATING METHOD. Dyna rev.fac.nac.minas [online]. 2009, vol.76, n.160, pp.179-184. ISSN 0012-7353.

Superconducting thick films of YBa₂Cu₃O_7-δ (YBCO) (≥ 1 μm thick) were deposited on single crystal MgO (100) and Ni%5W metallic substrates using the Dip-Coating method and thereafter heat treated by a Melt - Annealing process. Critical temperatures (Tc) of the films were approximately 89K and the critical current densities (Jc) around 2x10⁴ A/cm² at 77 K. All the samples displayed a granular morphology and a crystalline structure which correspond with that of the polycrystalline YBCO (123) as determined by scanning electron microscopy (SEM) and X-ray diffraction (DRX) respectively.

Keywords : YBCO superconducting thick films; Dip-Coating method; Melt-Annealing.

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