한국초전도학회:학술대회논문집

한국초전도학회 (The Korean Superconductivity Society)
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YBCO의 특성분석에 있어서 불순물효과의 보정

Correction of lmpurity Effects on the Characterization of YBCO

  • Ha, Dong-Han (Korea Research Institute of Standards and Science) ;
  • Byon, Sun-Ye (Korea Research Institute of Standards and Science) ;
  • Kim, Yong-Il (Korea Research Institute of Standards and Science) ;
  • Han, Gi-Yeol (Department of Physics, Chungbuk National University) ;
  • Lee, Kyu-Won (Korea Research Institute of Standards and Science)
  • 발행 : 1999.08.18
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초록

We have characterized solid solution Y$_{l-x}Ca_xBa_2Cu_3O_y$ (0${\le}$x${\le}$0.3) materials by measuring the XRD pattern, resistivity and hole concentrations, etc. As Ca concentration increases, T$_c$, is decreased monotonically because the hole concentration on the superconducting plane increases beyond the optimum region in the electronic phase diagram due to the hole transfer from the Cu-O chain to the CuO$_2$ plane. A very small amount of secondary phase have large effects on the analysis of oxygen content and hole concentration etc. The results before the correction of impurity phase are compared with those after the correction.

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