Abstract

PARRA-VARGAS, Carlos A.; CANARIA-CAMARGO, Cesar Camilo; ROA-ROJAS, Jairo  and  ALBINO-AGUIAR, José. Structural analysis of the RE₃Ba₅Cu₈O₁₈ (RE = Dy, Gd, Ho, Sm, Y, Yb) superconductor system. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2021, vol.45, n.174, pp.83-94.  Epub Sep 18, 2021. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.1163.

In this paper, we report the synthesis and structural characterization of the RE3Ba5Cu8O18 (RE = Dy, Gd, Ho, Sm, Y, Yb) system, which adds to the findings reported by Aliabadi, et aL, who determined a critical temperature (TC) of ~ 100 K for the superconducting Y3Ba5Cu8O18 system and evaluated its structural response in a sample. The new RE3Ba5Cu8O18 system was produced using the solid-state reaction method and a similar thermal process as the one used for the superconductor RE: 123. The experimental results obtained with X-ray diffraction and the Rietveld analysis showed that these samples had the expected crystal structure. However, it was obvious that the presence of non-superconducting phases did not affect the superconducting transition temperature. Moreover, magnetic studies revealed that RE3Ba5Cu8O18 samples showed a superconductivity transition within a temperature range of 80 - 93 K depending on the rare earth.

Keywords : New superconducting materials; RE₃Ba₅Cu₈O₁₈ superconductor; Solid-state reaction.

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