Crystal Growth of Superconducting $YBa_2Cu_3O_{7-x}$ Single Crystals

$YBa_2Cu_3O_{7-x}$초전도 단결정 성장

  • 정광철 (한양대 무기재료공학과) ;
  • 오근호 (한양대 무기재료공학과) ;
  • 최종건 (한양대 무기재료공학과)
  • Published : 1990.04.01

Abstract

Single crystals of YBa2Cu3O7-x have been grown in BaCuO2 flux at temperature of 125$0^{\circ}C$ and examined using XRD, EDAX and light microscopy. The YBCO crystals were grown in a cavity which was formed by the reduction of CuO and became large by the directional solidification in the crucible. The observed crystal growth habit is square planar with the c-axis normal to the plane. The surface morphology of grown crystals were growth ledges and growth sprial paterns on a (001) face.

Keywords

References

  1. Z. Phys. B, Condensed Matter v.64 Possible High $T_c$ Superconductivity in the Ba-La-Cu-O System J.G. Bednorz;K.A. Muller
  2. Phys. Rev. Letters v.58 Superconductivity at 93K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure M.K. Wu(et al.)
  3. Phys. Rev. Letters. v.58 Bulk Superconductivity at 91K Single-Phase Oxygen-Deficient Perovskite Ba₂Cu₃$O_{9-x}$ R.J. Cava(et al.)
  4. Jap. J. Appl. Phys. v.27 A New High-$T_c$ Oxide Superconductor without a Rare Earth Element H. Macda(et al.)
  5. Nature v.332 Bulk Superconductivity at 120K in the TI-Ca/Ba-Cu-O system Z.Z. Sheng;A.M. Hermann
  6. ICCG-9, the International Conference on Crystal Growth Growth of Superconducting Oxide Single Crystals by the TSFZ Method H. Kojima
  7. J. Crystal Growth v.85 Crystal Growth of High Temperature Superconductors Problems, Successes, Opportunities R.A. Laudise (et al.)
  8. J. Crystal Growth v.85 Growth of Single Crystals of the High-Temperature Superconductor YBa₂Cu₃$O_{7-x}$ G. Blestrino(et al.)
  9. J. Crystal Growth v.85 no.607 Crystal Growth of YBa₂CU₃$O_{7-x}$ H.J. Scheel;F. Licci
  10. J. Crystal Growth v.91 no.255 Crystal Growth and Thermal Analysis of YBa₂Cu₃$O_{7-x}$ J. Wojcik(et al.)
  11. Jap. J. Appl. Phys. v.26 Growth of YBa₂Cu₃$O_{7-x}$ Single Crystals H.K. Yosida(et al.)
  12. Nature v.328 Superconductivity in YBa₂Cu₃$O_{7-x}$ Single Crystals L.F. Schneemeyer(et al.)
  13. J. Crystal Growth v.91 Crystal Growth and Superconducting Phase Formation from Bi-Ca-Sr-Cu-O Liquids T.F. Cizek(et al.)
  14. Adv. Ceram Mat. v.2 Phase Equlibria and Crystal Chemistry in the System Ba-Y-Cu-O R.S. Roth(et al.)
  15. Am Ceram. Soc. Inc. Ceramic Superconductors Ⅱ Man.F. Yan
  16. J. Crystal Growth v.91 Growth and Chracterization of Large YBa₂Cu₃$O_{7-x}$ Single Crystals K.L. Keester
  17. J. Crystal Growth v.91 Crystallization of High Temperature Superconductors from Nonstoichiometric Melts A.B. Bykov(et al.)
  18. Advan. Phys. v.1 Crystal Growth and Dislocations F.C. Frank