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Electronic Localization Due to Fluorine in $YBa_2Cu_3O_xF_y$ Superconducting Materials

  • Keu Hong Kim (Department of Chemistry, Yonsei University) ;
  • Don Kim (General Education Department, Pusan National Institute of Technology) ;
  • Seung Koo Cho (Department of Chemistry, Yonsei University) ;
  • Yong Wook Choi (Department of Chemistry, Yonsei University) ;
  • Jong Sik Park (Department of Chemistry, Yonsei University) ;
  • Jae Shi Choi (Department of Chemistry, Yonsei University)
  • Published : 1990.06.20

Abstract

High-Tc superconducting materials, $YBa_2Cu_3O_xF_y$ with $x{\leq}6.89\;and\;0.25{\leq}y{\leq}0.35$, were prepared and Studied by X-ray diffraction, magnetic susceptibility and resistivity measurement. Under given conditions, reproducible resistivities were obtained, which increased with increase in the amount of fluorine. The introduced fluorine atoms were found to be localized in pyramidal Cu-O units rather than in Cu-O chains. It is suggested that the localized fluorine atom increases the electronic lolcalization of the superconducting electrons.

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  1. ChemInform Abstract: Electronic Localization Due to Fluorine in YBa2Cu3OxFy Superconducting Materials. vol.21, pp.47, 1990, https://doi.org/10.1002/chin.199047007