• Title/Summary/Keyword: Bi-phase

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The effect of Ag addition and high-energy ball milling on Bi-2223 tapes (Ag 첨가 및 볼밀링에 의한 Bi-2223/Ag 초전도 선재의 특성변화)

  • 김영순;오상수;류강식;정대영;안중호
    • Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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    • 2000.02a
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    • pp.101-103
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    • 2000
  • In the present work, we have investigated the combined effect of high-energy milling and Agb addition on microstructure and superconducting properties for Bi-2223/Ag. tape. The addition of siver plays an important role in enhancing liquid phase formation, Resulting in densification and cracking during solidification. Further study is needed for the optimization of Ag content and heat-treatment which can reduce the cracking.

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A Study on the Fabrication of Bi System Thick Film Using Melting Process (용융법에 의한 Bi계 Thick Film 합성)

  • Lee, Sang-Heon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.58 no.9
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    • pp.1775-1777
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    • 2009
  • BiSrCaCuO films were prepared on MgO single substerate at $885^{\circ}C$ by melt process. The films showed superconductivity above liquid nitrogen temperature (Tc= 96K). To investigate the effect of a melting temperature on the forming of the surface texturing, the samples were prepared under various temperature. The used powder was of high Tc phase. It is implies that the origin of the properties due to the heat treatment.

Epitaxial Growth of BSCCO Thin Films Fabricated by Son Beam Sputtering

  • Park, Yong-Pil;Lee, Joon-Ung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1997.11a
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    • pp.484-488
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    • 1997
  • BSCCO thin film is fabricated cia both processes of co-deposition and layer-by-layer deposition at an ultralow growth rate using ion beam sputtering method. The adsorption of Bi atom and the appearance of Bi-2212 phase shows large differance between both processes. It is found that the resident time of Bi vapor species on the surface of the substrate strongly dominates the film composition and the formation of the structure.

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