Processing and Fabrication of YBa2Cu4O8 and YBa2Cu4O8/YBa2Cu3Ox Composites

Abstract

Powders of YBa2Cu4O8 (“124”) were prepared via solid state reaction of Y2O3, BaCO3, and CuO. The mixed precursors were heated in flowing oxygen of reduced total pressure, followed by cooling and annealing at 750°C under ambient pressure oxygen. The procedure produced orthorhombic 124 as the main phase, with YBa2Cu3Ox (“123”) as a minor impurity phase. Phase purity improved, and nearly phase-pure 124 was obtained, upon annealing the as-calcined powder in flowing oxygen at 800°C.

This is a preview of subscription content, access via your institution.

References

  1. 1

    H. W. Zandbergen, R. Gronsky, K. Wang, and G. Thomas, Nature 331, 596 (1988).

    CAS  Article  Google Scholar 

  2. 2

    T. Kogure et al., Physica C 156, 45 (1988).

    Article  Google Scholar 

  3. 3

    A. F. Marshall et al., Phys. Rev. B37, 9353 (1988).

    Article  Google Scholar 

  4. 4

    H. W. Zandbergen and G. Thomas, Phys. Stat. Sol. A105. 207 (1988).

    Article  Google Scholar 

  5. 5

    P. Marsh, R. M. Fleming, M. L. Mandich, A. M. Desantalo, J. Kwo, M. Hong, and L. G. Martinez-Miranda, Nature 334, 141 (1988).

    CAS  Article  Google Scholar 

  6. 6

    J. Karpinski, E. Kaldis, E. Jilek, S. Rusiecki, and B. Bucher, Nature 336. 660 (1988).

    CAS  Article  Google Scholar 

  7. 7

    D. E. Morris, N. G. Asner, J. H. Nickel, R. L. Sid, J. Y. T. Wei, and J. E. Post, Physica C 152, 287 (1989).

    Article  Google Scholar 

  8. 8

    U. Balachandran, M. E. Biznek, J. W. Tomlins, B. W. Veal, and R. B. Poeppel, submitted to Physica C (1989).

  9. 9

    D. E. Morris et al., Phys. Rev. B39, 7347 (1989).

    Article  Google Scholar 

  10. 10

    U. Balachandran et al., Mater. Lett. (December 1989).

  11. 11

    R. J. Cava et al., Nature 332, 328 (1989).

    CAS  Article  Google Scholar 

  12. 12

    P. K. Gallagher, Advan. Ceram. Mater. 2, 632 (1987).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to U. Balachandran.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Balachandran, U., Biznek, M.E., Goretta, K.C. et al. Processing and Fabrication of YBa2Cu4O8 and YBa2Cu4O8/YBa2Cu3Ox Composites. MRS Online Proceedings Library 169, 373–376 (1989). https://doi.org/10.1557/PROC-169-373

Download citation