한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
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Effect of the grain boundary on the magnetic properties of the multi-seeded melt growth processed YBCO superconductors

다중종자결정성장법으로 제조한 YBCO 초전도체의 결정입계에 따른 자기적 성질의 영향

  • Kim, Chan-Joong (Functional Materials Laboratory, Korea Atomic Energy Research Institute) ;
  • Joo, Jin-Ho (Schools of Metallurgy and Material Science Engineering, Sungyunkwan University) ;
  • Han, Young-Hee (Power System Laboratory, Korea Electric Power Research Institute) ;
  • Han, Sang-Chul (Power System Laboratory, Korea Electric Power Research Institute) ;
  • Sung, Tae-Hyun (Power System Laboratory, Korea Electric Power Research Institute) ;
  • Hong, Gye-Won (Functional Materials Laboratory, Korea Atomic Energy Research Institute) ;
  • Kim, Ho-Jin (Functional Materials Laboratory, Korea Atomic Energy Research Institute, Schools of Metallurgy and Material Science Engineering, Sungyunkwan University)
  • Published : 2000.08.16
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Abstract

Multiseeding with (100)/(100) grain junctions of top-seeded melt growth (TSMG) processed YBCO superconductors was studied. The effect of the number of seeds and the distance between two seeds on the levitation forces and the trapped magnetic fields of the TSMG-processed YBCO samples was investigated. Multiple seeding shortened the processing time for the fabrication of TSMC-processed YBCO superconductors. The large magnetic field was trapped at the grain junction when two seeds was placed without spacing, while the amount of the magnetic field decreased when the seed distance increased. This is attributed to the increased amount of the residual melt phases around the grain junctions.

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