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Effect of a multi-buffer layer (Sm2O3/CeO2) on the superconducting properties of an EuBa2Cu3O7−δ thin film

Ota, Y ; Kimura, Y ; Michikami, O

Physica C: Superconductivity and its applications, 01 October 2005, Vol.426-431, pp.1419-1423 [Periódico revisado por pares]

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  • Título:
    Effect of a multi-buffer layer (Sm2O3/CeO2) on the superconducting properties of an EuBa2Cu3O7−δ thin film
  • Autor: Ota, Y ; Kimura, Y ; Michikami, O
  • Assuntos: Euba2cu3o7−Δ ; Sm2o3 ; Ceo2 ; Critical Current Density ; 74.76.Bz ; Euba2cu3o7−Δ ; Sm2o3 ; Ceo2 ; Critical Current Density ; Physics
  • É parte de: Physica C: Superconductivity and its applications, 01 October 2005, Vol.426-431, pp.1419-1423
  • Descrição: In order to suppress the influence of facets, annealing of a thick CeO2 film and insertion of a Sm2O3 buffer layer were carried out. Annealing of R-Al2O3 with a 200-nm-thick CeO2 buffer layer at 1000°C for 3h resulted in improvement in the surface morphology and crystallinity of the buffer layer. However, microcracks were observed on the surface of the CeO2 film, and EuBa2Cu3O7−δ (EBCO) thin films directly deposited on annealed substrates exhibited Tce’s of about 84K or lower. By depositing 100-nm-thick Sm2O3 second buffer layers on annealed CeO2, EBCO thin films exhibited Tce’s of 90.1K and Jc’s of 5.5MA/cm2 at 77.3K.
  • Idioma: Inglês

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