Metastable Superstructures in RuSr2Gd1.4Ce0.6Cu2O10-δ Superconductor Based on TEM Observation at Room Temperature

Abstract

Three types of metastable modulations in Ru-based superconductor RuSr2Gd1.4Ce0.6Cu2O10-δ are observed by electron diffraction at room temperature and reported in this paper. The modulations are sensitive to the irradiation of the electron beam and the sample storage time. Having the tetragonal symmetry (I4/mmm) with a=0.384nm, c=2.864nm, the structure of RuSr2Gd1.4Ce0.6Cu2O10-δ?resembles that of YBa2Cu3O7-δ by inserting a fluorite type Gd1.4Ce0.6O2 layer instead of the Y layer and Ru ions residing in the Cu(1) site. In this compound, superconductivity is confined to the CuO2 layer while magnetism stems from the RuO2 layer. The metastable modulations display the interaction between the two layers from the structural point of view. The results suggest that although, superconductivity and magnetism are decoupled from each other in the unconventional superconductor, the effect may be limited by metastable lattice modulation.

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

References

  1. 1.

    I. Felner, U. Aasf, Y. Levi, O. Millo, Phys. Rev. B55, R3374(1997).

    Article  Google Scholar 

  2. 2.

    I. Felner, U. Aasf, C. Godart, E. Alleno, Physica B 259-261, 703(1999).

    CAS  Article  Google Scholar 

  3. 3.

    L. Bauernfeind, W. Widder, H. F. Braun, Physica C 254, 151(1995).

    CAS  Article  Google Scholar 

  4. 4.

    Tang Kaibin, Qian Yitai, Zhao Yadun, Yang Li, Chen Zuyao and Zhang Yuheng, Physica C 259, 168(1996).

    CAS  Article  Google Scholar 

  5. 5.

    R. Greatrex, N. N. Greenwood and M. Lal, Mat. Res. Bull. 15, 113(1980).

    CAS  Article  Google Scholar 

  6. 6.

    T.C. Gibb, R. Greatrex, N. N. Greenwood and G. Snowdon, J. Solid State Chem. 14, 193(1975).

    CAS  Article  Google Scholar 

  7. 7.

    J. D. Jorgensen, S.Y. Pei, P. Lightfoot, H. Shi, A. P. Paulikas, B. W. Veal, Physica C 167, 571(1990).

    CAS  Article  Google Scholar 

  8. 8.

    B. W. Veal, H. You, A. P. Paulikas, H. Shi, Y. Fang and J. W. Downey, Phys. Rev. B 42, 4770(1990).

    CAS  Article  Google Scholar 

  9. 9.

    Y. Y. Wang, H. Zhang, V.P. Dravid, L.D. Marks, P.D. Han, D.A. Payne, Physica C 225, 247(1995).

    Article  Google Scholar 

  10. 10.

    T. Krekels, S. Kaesche, G. Van Tendeloo, Physica C 248, 317(1995)

    CAS  Article  Google Scholar 

  11. 11.

    C. H. Chen, S. W. Cheong and A.S. Cooper, Phys. Rev. Lett. 71, 2461(1993)

    CAS  Article  Google Scholar 

  12. 12.

    N. Ogita, S. Takanashi, M. Udagawa and K. Ohbayashi, J. Phys. Soc. Jpn. 61, 3009(1992).

    CAS  Article  Google Scholar 

  13. 13.

    S. W. Cheong, G. Aeppli, T. E. Mason, H. Mook, S. M. Hayden, P. C. Canfield, Z. Fisk, K. N. Clausen and J. L. Martinez, Phys. Rev. Lett. 67, 1791(1991).

    CAS  Article  Google Scholar 

  14. 14.

    S. M. Hayden, G.H. Lander, J. Zarestky, P.J. Brown, C. Stassis, P. Metcalf and J. M. Honig, Phys. Rev. Lett. 68, 1061(1992).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Li Yang.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Yang, L., Vieira, J.M., Tang, K. et al. Metastable Superstructures in RuSr2Gd1.4Ce0.6Cu2O10-δ Superconductor Based on TEM Observation at Room Temperature. MRS Online Proceedings Library 689, 47 (2001). https://doi.org/10.1557/PROC-689-E4.7

Download citation