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Effect of Au Additive on The Bi Site in The Bi2-δAuδSr2CaCu2O8+δ (x=0~0.15) Superconductors

Bi2-δAuδSr2CaCu2O8+δ(x = 0~0.15) 산화물고온초전도체의 Bi 위치에 Au 혼합효과

  • 이민수 (한밭대학교 두뇌한국 21사업단) ;
  • 최봉수 (한밭대학교 정보통신·컴퓨터공학부) ;
  • 이정화 (한밭대학교 교양과정부) ;
  • 송기영 (한밭대학교 교양과정부) ;
  • 정성혜 (한남대학교 이과대학 광·전자물리학과) ;
  • 홍병유 (성균관대학교 전기전자컴퓨터공학부)
  • Published : 2002.04.01

Abstract

Samples with the norminal composition, $Bi_{2-x}Au_xSr_2CaCu_2O_{8+\delta}$ (x = 0, 0.05. 0.1, 0.15) were prepared by the solid-state reaction method. The superconducting properties, x-ray powder diffraction patterns, critical temperature and microstructure of surface were measured the samples. x-ray patterns show the single phase(2212) nature of the samples. But, the peaks of 2201 at $2\theta=30^{\circ}$ and Au peak at $2\theta=38.31^{\circ}$ are observed in the Au additive samples. The grain sire are enlarged with the increase of x. As the result of enlargement the grain size, the onset and offset critical temperature($T_c^{on}$,$T_c^{zero}$) increased with increase of x.

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