Properties of YBa2Cu3O7−δ Superconducting Films on Sr2YSbO6 Buffer Layers

Ortiz-Diaz, O.; Téllez, D.A. Landı́nez; Roa-Rojas, J.

doi:10.5772/37912

Cited by 2 publications

(2 citation statements)

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“…Concern to the crystallographic coupling, we notice that there is a matching ~3 % between the SHNO lattice parameter a/2=4.009 Å and the ab-plane crystallographic constants of YBCO a≈b≈3,87 Å. This matching value between the lattice constant of possible substrate materials and YBCO ab-plane crystallographic parameter is not very far from the matching reported for the SrTiO 3 single crystal [12], which is the substrate most widely used for the growth of the YBCO superconductor (2.14%).…”

Section: +5mentioning

confidence: 57%

Chemical Stability and Crystallographic Analysis of the the Sr2HoNbO6 Cubic Perovskite as Potential Substrate for YBa2Cu3O7-δ Superconducting Films

2016

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The Sr 2 HoNbO 6 complex perovskite has been synthesized by solid-state reaction. X-ray diffraction pattern reveals that Sr 2 HoNbO 6 material crystallizes in a cubic structure, Fm3̅ m space group, lattice constant a=8.018 Å, which has a lattice mismatch ~3% with YBa 2 Cu 3 O 7-δ . The chemical stability of Sr 2 HoNbO 6 with YBa 2 Cu 3 O 7-δ superconducting has been studied by x-ray diffraction and measurements of magnetization as a function of temperature on Sr 2 HoNbO 6 -YBa 2 Cu 3 O 7-δ composites. X-ray diffraction patterns of the composite shown that all the X-ray diffraction peaks could be indexed for either Sr 2 HoNbO 6 or YBa 2 Cu 3 O 7-δ with no extra peak detectable. This result implies that these compounds remain as two different separate phases in the composite with no chemical interaction. Magnetic response shows that superconducting transition temperature of pure YBa 2 Cu 3 O 7-δ and Sr 2 HoNbO 6 -YBa 2 Cu 3 O 7-δ composites is 93,5 K. These favorable characteristics of Sr 2 HoNbO 6 show that it can be used as a potential substrate material for growth of YBa 2 Cu 3 O 7-δ superconducting films.

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Section: +5mentioning

confidence: 57%

Chemical Stability and Crystallographic Analysis of the the Sr2HoNbO6 Cubic Perovskite as Potential Substrate for YBa2Cu3O7-δ Superconducting Films

2016

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“…For good quality substrates, the material candidate must satisfy the following requirements: chemical stability, e. g., absence of chemical reaction at the interface substrate-film; good lattice parameter coupling at the crystallographic plane substrate-film to guarantee the epitaxial growth; and the presence of the substrate material must not affect the superconducting properties of the film 3 . The high chemical reactivity of YBa 2 Cu 3 O 7-δ (YBCO) with most conventional substrate materials at the processing temperature imposes severe restrictions on the availability of substrates for the YBCO superconducting films 4 . Moreover, the divergence of the crystallographic properties at the interface between YBCO and the commonly available substrates, as well as the difficulty in obtaining chemical and structural properties compatible with the YBCO superconductor, constitute a great motivation to produce new optimal materials for this application.…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of YBa2Cu3O7/BaZrO3 composites

2013

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We reported a study of the structural and magnetic properties of BaZrO 3 (BZO) as possible substrate material for the production of YBa 2 Cu 3 O 7-δ (YBCO) superconducting films. Rietveld analyses of the X-ray diffraction pattern show that BZO crystalizes as a cubic perovskite, space group Pm3m (#221). Chemical stability and crystallographic coupling between BZO and YBCO were examined by characterizing YBCO/BZO (10, 30 and 50 YBCO vol%) polycrystalline composites. Morphological and compositional analyses of composites were performed through scanning electron microscopy and energy dispersive X-ray experiments, respectively. Response of magnetization measurements revealed that the proximity of BZO does not affect the superconducting transition temperature (T c =90,2 K) of YBCO material. Our results evidenced that the BZO is an excellent candidate to be substrate for the fabrication of YBCO superconducting thin films.

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Properties of YBa2Cu3O7−δ Superconducting Films on Sr2YSbO6 Buffer Layers

Cited by 2 publications

References 50 publications

Chemical Stability and Crystallographic Analysis of the the Sr2HoNbO6 Cubic Perovskite as Potential Substrate for YBa2Cu3O7-δ Superconducting Films

Chemical Stability and Crystallographic Analysis of the the Sr2HoNbO6 Cubic Perovskite as Potential Substrate for YBa2Cu3O7-δ Superconducting Films

Structural and magnetic properties of YBa2Cu3O7/BaZrO3 composites

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