한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
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Magnetic properties and Microstructure of YBa$_2Cu_3O_x$ High Temperature Superconducting Single Crystals Grown by Multi-seeding

Multiseeding 법으로 성장시킨 YBa$_2Cu_3O_x$ 고온초전도 단결정의 특성과 미세구조

  • Han, Young-Hee (Power System Laboratroy, Korea Electric Power Research Institute) ;
  • Sung, Tae-Hyun (Power System Laboratroy, Korea Electric Power Research Institute) ;
  • Han, Sang-Chul (Power System Laboratroy, Korea Electric Power Research Institute) ;
  • Lee, Jun-Seong (Power System Laboratroy, Korea Electric Power Research Institute) ;
  • Kim, Sang-Joon (Power System Laboratroy, Korea Electric Power Research Institute)
  • 한영희 (전력연구원, 전력계통연구실) ;
  • 성태현 (전력연구원, 전력계통연구실) ;
  • 한상철 (전력연구원, 전력계통연구실) ;
  • 이준성 (전력연구원, 전력계통연구실) ;
  • 김상준 (전력연구원, 전력계통연구실)
  • Published : 1999.08.18
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Abstract

A new multi-seeding process for the growth of YBa$_2Cu_3O_x$ single crystals was developed. This process introduces an additional heating step to peritectic temperature and a subsequent slow cooling step to the growth temperature following the point when the crystals contacted. The crystal growth was resumed thereafter. The results obtained with this new process were compared with those of the conventional growth process, in which materials were only kept at the growth temperature. There was significant improvement in trapped magnetic field over the conventional multi-seeding process, which is believed to be due to complete elimination of liquid phase between crystals.

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