Skip to main content
SpringerLink
Log in

RBa2Cu2FeO7 phases (R=Y, Eu): Synthesis, structure, and mössbauer spectra

  • Published:
Journal of Structural Chemistry Aims and scope Submit manuscript

Abstract

The reaction of Y/Eu, Cu, Fe oxides and Ba carbonate in a ratio of 1:2:1:2 at 980°C in an oxygen current forms double-phase systems; in each system, the major phase is a 123 type orthorhombic three-layered structure, and the secondary phase, amounting to about one-third of the major phase, is a tetragonal, nearly pseudocubic 123 structure. Both phases in the yttrium and europium systems are characterized by formation of weak superstructures with doubled parameters of the ordinary three-layered cell. In each system, the two phases seem to differ in the content and distribution of iron. Based on the gamma resonance data, it is concluded that ∼2/3 of iron atoms occupy Cu(2) positions in the form of Fe3+ and are magnetically ordered at room temperature. The other Fe atoms occupy Cu(1) positions with different coordinations; some of the octahedrally coordinated Fe3+ ions in Cu(1) positions (major part in the case of the Eu system) are magnetically ordered, probably, under the influence of magnetic ordering in Cu(2) sublattices containing Fe3+ ions.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. P. Shveikin, V. A. Gubanov, A. A. Fotiev, et al.,Electronic Structure and Physicochemical Properties of High-Temperature Superconductors [in Russian], Nauka, Moscow (1990).

    Google Scholar 

  2. I. V. Zubov,Reviews on High-Temperature Superconductivity [in Russian], Vol. 1, International Center on Scientific and Technical Information, Moscow (1990), p. 105.

    Google Scholar 

  3. R. A. Stukan and E. F. Makarov,Khim. Fiz.,9, No. 1, 29–43 (1990).

    CAS  Google Scholar 

  4. R. A. Stukan, V. E. Prusakov, A. G. Knizhnik, et al.,Sverkhprovodimost: Fiz., Khim., Tech.,4, No. 12, 2368–2373 (1991).

    CAS  Google Scholar 

  5. J. M. Taranson, P. Barboux, P. F. Miceli, et al.,Phys. Rev. B: Cond. Matter,37, No. 13, 7458–7469 (1988).

    Google Scholar 

  6. T. Okada, N. Sakai, K. Asai, et al.,Hyperfine Interactions,42, Nos. 1–4, 1231–1234 (1988).

    Article  CAS  Google Scholar 

  7. S. A. Sunshine, L. F. Schneemeuer, T. Siegrist, et al.,Chem. Mater.,1, 331–336 (1989).

    Article  CAS  Google Scholar 

  8. Q. Huang, P. Karen, V. L. Karen, et al.,Phys. Rev. B,45, No. 17, 9511–9517 (1992).

    Article  Google Scholar 

  9. Y. Matsumoto and J. Hombo,J. Solid State Chem.,93, 395–402 (1991).

    Article  CAS  Google Scholar 

  10. G. A. Chesnokov, A. A. Stebunov, V. A. Novichkov, et al.,Sverkhprovodimost: Fiz., Khim., Tech.,3, No. 4, 725–729 (1990).

    CAS  Google Scholar 

  11. G. A. Chesnokov, V. A. Novichkov, A. A. Stebunov, et al.,Zh. Neorg. Khim.,35, No. 11, 2723–2728 (1991).

    Google Scholar 

  12. A. G. Knizhnik, R. A. Stukan, and G. O. Eremenko,Sverkhprovodimost: Fiz., Khim., Tech.,3, No. 4, 757–762 (1990).

    CAS  Google Scholar 

  13. A. G. Knizhnik and R. A. Stukan, ibid.,,3, No. 11, 2619–2621 (1990).

    CAS  Google Scholar 

  14. L. Er-Racho, C. Michel, Ph. Lacorre, and B. Raveau,J. Solid State Chem.,73, 531–535 (1988).

    Article  Google Scholar 

  15. S. D. Kirik, S. A. Dubkova, and E. V. Elistratova, “Database of diffraction standards of HTSC,” Part 1, Preprint No. 545 F, Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk (1989).

  16. G. Roth, P. Adelmann, G. Heger, et al.,J. Phys. I (Paris),1, No. 5, 721–725 (1991).

    CAS  Google Scholar 

  17. V. I. Goldanskii and R. H. Herber (eds.),Chemical Applications of Mössbauer Spectroscopy, Academic Press, New York (1968).

    Google Scholar 

  18. E. R. Bauminger, M. Kowitt, I. Felner, and I. Nowik,Hyperfine Interactions,42, No. 3, 1252–1262 (1988).

    Article  CAS  Google Scholar 

  19. E. R. Bauminger, M. Kowitt, I. Felner, and I. Nowik,Solid State Commun.,65, No. 2, 123–127 (1988).

    Article  CAS  Google Scholar 

  20. E. Baggio-Saitovich, I. A. Azevedo, R. B. Scorzelli, et al.,Phys. Rev. B: Cond. Matter,37, No. 13, 7967–7970 (1988).

    Google Scholar 

  21. V. I. Goldanskii and R. A. Stukan,Zh. Strukt. Khim.,8, No. 5, 875–890 (1967).

    CAS  Google Scholar 

  22. R. A. Stukan, Chemical Sciences’ Doctoral Dissertation, Institute of Chemical Physics, Russian Academy of Sciences, Moscow (1974).

    Google Scholar 

Download references

Authors
  1. R. A. Stukan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. G. Yudina
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. M. R. Stukan
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. E. F. Makarov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

N. N. Semyonov Institute of Chemical Physics, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 39, No. 2, pp. 267–274, March–April, 1998.

This work was supported by RFFR grant No. 95-03-08227.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Stukan, R.A., Yudina, N.G., Stukan, M.R. et al. RBa2Cu2FeO7 phases (R=Y, Eu): Synthesis, structure, and mössbauer spectra. J Struct Chem 39, 217–223 (1998). https://doi.org/10.1007/BF02873621

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02873621

Keywords

Search

Navigation