Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

The Effect of Sintering Time on the Stabilization of the Bi-Pb-Sr-Ca-Cu-O Superconducting Phase

Bi-Pb-Sr-Ca-Cu-O 초전도상의 안정화에 미치는 소결시간의 영향

  • 형경우 (전주대학교 이공대학 화학과) ;
  • 박성호 (전주대학교 이공대학 화학과) ;
  • 이두원 (전주대학교 이공대학 화학과) ;
  • 한태종 (전주대학교 이공대학 물리학과) ;
  • 최범식 (전주대학교 이공대학 물리학과) ;
  • 김창은 (연세대학교 공과대학 세라믹공학과)
  • Published : 1992.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

A high-Tc superconducting phase was obtained using long sintering time of 210 hours. From XRD and SEM analyses, it could be confirmed that the particles were plate phase, of which the structure is tetragonal system with lattice parameter a=b=5.44${\AA}$, C=37.18${\AA}$. Resistance and current density measurements were carried out using 4 probe method. The experimental data revealed that the stable high-Tc superconducting phase was easily formed by addition of Pb to Bi-system. Therefore, we could find the sintering condition to synthesis the system having the largest fraction of high Tc phase.

Keywords

References

  1. Z. Phys. v.B38 Superconductivity in the Bismuth Strontium Copper Oxide System C. Michel;M. Hervieu et al.
  2. Jpn. J. Appl. Phys. v.27 Rare Earth Metal Free Oxide Superconductors with High Transtion Temperature H. Maeda;Y. Tanaka et al.
  3. Phys. Rev. Lett. v.60 no.12 Superconductivity in the High Tc BiCaSrCuO System : Phase Identification R.M. Hazen;C.T. Prewitt et al.
  4. Phys. Rev. v.B38 Preparation Structure, and Properties of the Superconducting Compound Series Bi₂Sr₂$Ca_11-1$ with n=1,2,and3 J.M. Tarascon;W.R. McKmnon et al.
  5. Sol. State. Comm v.72 no.1 The 115K Superconductivity in Bi-Pb(Ag,Nb,Sb)-Sr-Ca-Cu Oxide A. Rojek;K. Fisher et al.
  6. Physicac v.C Studies of Ba₂YCuO and Superconductivity of Bi(Pb)-Sr-Ca-Cu-O RJ. Cava;B. Batiogg et al.
  7. Jpn. J. Appl. Phys v.27 no.6 High-T Phase Promoted and Stabilized in the Bi-Pb-Sr-Ca-Cu-O M. Takano;J. Takada et al.
  8. Preprints E. Chavira;R. Escudero;D. Rios-Jara;L.M. Leon
  9. Jpn. J. Appl. Phys. v.26 no.4 High-Tc Superconductivity and Diamagnetism of Y-Ba-Cu Oxides H. Takagi;S. Uchida et al.
  10. Jpn. J. Appl Phys. v.27 no.7 Superconductivity of Bi₂Sr₂Ca₂Cu₃Pb$O_y$(x=0.2, 0.4,0.6) M. Mizuno;H Endo et al.
  11. Jpn. J. Appl. Phys. v.27 no.8 Properties of Pb-Doped Bi-Sr-Ca-Cu-O Superconductors E. Yangisawa;D.R. Dietderich et al.
  12. Jpn. J. Appl. Phys v.27 no.9 Complex Susceptibithy of Bi, Pb-Sr-Ca-Cu-O Superconductors H. Mazaki;M. Takano et al.
  13. Proc. Phys. Soc. v.57 An Experimental Investigalion of Extrapolation Methods in the Derivation of Accutrate Unit-cell Dimension of Crystals J.B. Nelson;D P. Riley et al.
  14. Jpn. J. Appl. Phys. v.28 no.11 Normal-state Resistivity of the (Bi/Pb)-Ca-Sr-Cu-Oxide System S.G. Lee;K.S. Yi et al.
  15. Jpn. J Appl. Phys. v.27 no.10 Reaction Mechanism of Forming the High-$T_c$ Superconductor in the Pb-B1-Sr-Ca-Cu-O System A. Sumiyama;H. Endo;J. Tsuchiya et al.
  16. Jpn. J. Appl. Phys. v.28 no.11 On the Formation of High $T_c$ Phase in Mo-doped(Bi,Pb)₂Sr₂Ca₂Cu₃$O_y$ Superconductors R. Sato;T. Komatsu et al.
  17. Jpn. J. Appl. Phys v.28 no.11 Effect of the Low-temperature Annealing on the Coupling at Grain Boundaries in Sb-doped(Bi,Pb)₂Sr₂Ca₂Cu₃$O_y$ Superconductors R. Sato;T. Komatsu et al.
  18. Mat. Sci. & Eng. v.B3 Expansion of BiSrCaCuO Pellets C.J. Kim;H.G. Lee;D.Y. Won