A Study on Characteristic of Superconductivity and Microstructure of $Y_1Ba_2Cu_3O_{7-y}$-Ag

$Y_1Ba_2Cu_3O_{7-y}$-Ag의 초전도성과 미세구조의 특성 연구

  • Kim, Chae-Ok (Dept. of Physics, College of Natural Science Hanyang University,) ;
  • Park, Jeong-Su (Dept. of Physics, College of Natural Science Hanyang University,) ;
  • Yu, Deok-Su (Dept. of Physics, College of Natural Science Hanyang University,)
  • 김채옥 (한양대학교 자연과학대학 물리학과) ;
  • 박정수 (한양대학교 자연과학대학 물리학과) ;
  • 유덕수 (한양대학교 자연과학대학 물리학과)
  • Published : 1995.10.01

Abstract

Ag-doped $Y_1$Ba$_2$Cu$_3$O$_{7-y}$ samples have been prepared by solid state reaction. High-Tc super conductivity, microstructure and mechanical property of the Ag-doped $Y_1$Ba$_2$Cu$_3$O$_{7-y}$ samples have been studied. As the Ag content increased, the grain size of $Y_1$Ba$_2$Cu$_3$O$_{7-y}$, increased and connectivity between the grains was improved, and the sample becomed denser and harder than the undoped. From the result, it is concluded that Ag addition reduced weak link and weak coupling between grains and led to the strong coupling. Furthermore, the anisotropy of crytstal structure was decreased and thermal stability, mechanical property of $Y_1$Ba$_2$Cu$_3$O$_{7-y}$-Ag were improved.mproved.

Keywords

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