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Structural phase of y358 superconductor comparison with Y123

Gholipour, S ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1007/s10948-012-1611-4
  3. Publisher: Springer , 2012
  4. Abstract:
  5. We analyze an experiment in which two distinct superconducting phases YBa2Cu3O7-δ (Y123) and Y 3Ba5Cu8O18-δ (Y358) coexisted. This experiment enabled us to characterize the recently introduced Y358 phase in contrast to the Y123 phase, thus to resolve some discrepancies reported in associated properties of Y358. Specifically, our experiment indicates the transition temperature Tmid C = 105 K and 94 K for Y358 and Y123, respectively, and that Y358 has five CuO2 planes and three CuO chains, with Pmm2 symmetry and lattice parameter (a, b, c) = (3.845, 3.894, 31.093) Å, in agreement with density functional theory predictions for this specific structure
  6. Keywords:
  7. Cuprate superconductors ; Sol-gel method ; CuO chains ; Density functionals ; Super conducting phasis ; Density functional theory ; Electron transport properties ; High temperature superconductors ; Oxide superconductors ; Sol-gel process ; Transport properties ; X ray diffraction ; Experiments
  8. Source: Journal of Superconductivity and Novel Magnetism ; Volume 25, Issue 7 , October , 2012 , Pages 2253-2258 ; 15571939 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs10948-012-1611-4