한국초전도학회:학술대회논문집

한국초전도학회 (The Korean Superconductivity Society)
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Synthesis of high quality infinite-layer superconducting compound of Sr$_{0.9}$Sm$_{0.1}$CuO$2$ and its pinning properties

  • Park, Min-Seok (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology) ;
  • Kim, J.Y. (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology) ;
  • Kim, Mun-Seog (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology) ;
  • Kim, Heon-Jung (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology) ;
  • Lee, Sung-Ik (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology) ;
  • Jung, C.U. (National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology)
  • 발행 : 2000.08.16
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초록

We report high pressure synthesis of Sr$_{0.9}$Sm$_{0.1}$CuO$_2$. Powder x-ray diffraction showed that the synthesized compounds have infinite layer structure as a major component. Slow heating at the first stage of heating processes after pressurization resulted in several larger grains. The largest grain was found to have the longest edge length of about 100 micrometer. Through magnetic property measurement in superconducting state, we found that pinning in this compound has substantial difference from that of La doped infinite layer, which has no unpaired spin at Sr site.

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