Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Inter- and Intra-granular Critical Current in $Bi_{1.4}Pb_{0.6}Sr_2Ca_2Cu_{3.6}O_x$ Superconducting Oxide

  • Choy, Jin-Ho (Department of Chemistry, Research Institute of Molecular Science, College of Natural Sciences, Seoul National University) ;
  • Kim, Seung-Joo (Department of Chemistry, Research Institute of Molecular Science, College of Natural Sciences, Seoul National University) ;
  • Park, J.C. (Laboratoire de Chimie du Solide du CNRS, Universite de Bordeaux I) ;
  • Frohlich, K. (Laboratoire de Chimie du Solide du CNRS, Universite de Bordeaux I) ;
  • Dordor, P. (Laboratoire de Chimie du Solide du CNRS, Universite de Bordeaux I) ;
  • Grenier, J.C. (Laboratoire de Chimie du Solide du CNRS, Universite de Bordeaux I)
  • Published : 1990.12.20
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Abstract

A.c. susceptibility for $Bi_{1.4}Pb_{0.6}Sr_2Ca_2Cu_{3.6}O_x$ superconductor is measured as a function of temperature at different value of a.c. magnetic field amplitude. Two transition steps are attributed to the intergranular and intragranular properties. Based on Bean's critical state model, intergranular critical current density, $J_c^{gb}$ (11 $A/cm^2$ at 77 K) and intragranular critical current density, $J_c^g (7{\times}10^3\;A/cm^2$ at 100 K) are estimated. The low values of $J_c^{gb}$and $J_c^g$ reflect a poor nature of coupling between grains and the low pinning force density of intragrain in $Bi_{1.4}Pb_{0.6}Sr_2Ca_2Cu_{3.6}O_x$ superconductor.

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  1. ChemInform Abstract: Inter- and Intragranular Critical Current in Bi1.4Pb0.6Sr2Ca2Cu3.6Ox Superconducting Oxide. vol.22, pp.25, 1990, https://doi.org/10.1002/chin.199125004