Skip to main content
SpringerLink
Log in

Modified mixed oxide perovskites 0.7Sr(Al1/2B1/2) O3·0.3LaAlO3 and 0.7Sr(Al1/2B1/2) O3·0.3NdGaO3 (B=Ta5+ or Nb5+) for high-T c superconductor substrate applications

  • Papers
  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

Single-crystal fibres of modified strontium aluminium tantalum oxide (1-x)Sr(Al1/2Ta1/2) O3·xLaAlO3(SAT-LA) and (1-x)Sr(Al1/2Ta1/2)O3·xNdGaO3 (SAT·NG), and modified strontium aluminum niobium oxide (1-x)Sr(Al1/2Nb1/2)O3·xNdGaO3(SAT·NG) and (1-x)Sr (Al1/2Nb1/2)O3·xLaAlO3 (SAN·LA) were grown using a laser-heated pedestal growth technique. 0.7SAT·0.3LA grows congruently and retains a twin free simple cubic perovskite structure (as the SAT) when cooled down to room temperature. 0.7SAT·0.3LA crystals have a moderate dielectric constant (κ = 21.7) and low dielectric loss (tan δ = 7.5 × 10−5) at 10 kHz and 90 K. The reduction problem of Ta5+ is eliminated (which is common in the case of SAT growth). 0.7SAT·0.3NG and 0.7SAN·0.3NG have lower melting temperatures and crystal growth is easier. NdGaO3 addition to the SAT and SAN enhances the potential of SAT and SAN as large-area substrates for high-T c superconductor growth. However, the dielectric constants increased from κ∼-12 to κ∼-16(0.7SAT·0.3NG) and from κ∼18 to κ∼23 (0.7SAN·0.3NG) as a result of NdGaO3 incorporation.

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. H. M. O'Bryan, P. K. Gallagher, G. W. Berkstrekker andC. D. Brandle,J. Mater. Res. 5 (1990) 183.

    Google Scholar 

  2. T. Venkatesan, C. C. Chang, D. Dijkkamp, S. B. Dgale, E. W. Chase, L. A. Farrow, D. M. Hwang, P. F. Miceli, S. A. Schwarz, J. M. Terasion, X. D. Wu andA. Inam,J Appl. Phys. 63 (1988) 4591.

    Google Scholar 

  3. G. Koren, A. Gupta, E. A. Giess, A. Segmuller, andR. B. Laibowitz,Appl. Phys. Lett. 54 (1989) 1054.

    Google Scholar 

  4. D. Mateika, H. Kohler, H. Laudan andE. Völkel,J. Cryst. Growth 109 (1991) 447.

    Google Scholar 

  5. L. E. Cross, R. Roy. R. Guo, J. Sheen, A. S. Bhalla, F. W. Ainger andE. C. Subbarao, presented at Defence Advanced Research Projects Agency (DARPA) 3rd Annual High Temperature Superconductor Workshop, Seattle, Washington, September (1991).

  6. R. Guo, J. Sheen, A. S. Bhalla, F. Ainger, E. C. Subbarao andL. E. Cross, presented at Defence Advanced Research Projects Agency and Office of Naval Research (DARPA/ONR) Workshop on substrate Materials for High-T c Superconductors, Colonial Williamsburg, Virginia, February (1992).

  7. R. Guo, A. S. Bhalla, JYH Sheen, F. W. Ainger, E. C. Subbarao andL. E. Cross,J. Mater. Res (in press).

  8. E. A. Wood,Amer. Min. 36 (1951) 768.

    Google Scholar 

  9. S. Geller andV. B. Bala,Acta Crystallog. 9 (1956) 1019.

    Google Scholar 

  10. M. Davidson,Superconductor Industry 5 (2) (1992) cover page.

  11. R. D. Burbank,J. Appl. Cryst. 3 (1970) 112.

    Google Scholar 

  12. O. Muller andR. Roy, in “The Major Ternary Structural Families” (Springer, Berlin, 1974) p. 215.

    Google Scholar 

  13. F. S. Galasso, in “Structure, Properties and Preparation of Perovskite-type Compounds” (Pergamon, Oxford, 1969) p. 10.

    Google Scholar 

  14. S. Haussühl andD. Mateika,Cryst. Res. Technol. 26 (1991) 481.

    Google Scholar 

  15. C. D. Brandle andV. J. Fratello,J. Mater. Res. 5 (1990) 2160.

    Google Scholar 

  16. M. L. Keith andR. Roy,Amer. Min. 39 (1954) 1.

    Google Scholar 

  17. J. Yamamoto andA. S. Bhalla,Mater. Res. 24 (1989) 761.

    Google Scholar 

  18. R. Guo, A. S. Bhalla andL. E. Cross,J. Appl. Phys. 75 (1994) 4704.

    Google Scholar 

  19. S. Geller,Acta Crystallogr. 10 (1957) 243.

    Google Scholar 

  20. R. D. Shannon andC. T. Prewitt,ibid. B25 (1969) 925

    Google Scholar 

  21. Idem, ibid. B26 (1970) 1046.

    Google Scholar 

  22. T. Konaka, M. Sato, H. Asano andS. Kubo,J. Supercond. 4 (1991) 283.

    Google Scholar 

  23. R. Guo, J. Povoa andA. S. Bhalla,Mater. Res. Lett. in press.

  24. Hoydoo You, U. Welp andY. Fang,Phys. Rev. B43 (1991) 3660.

    Google Scholar 

  25. R. Ramesh, A. Inam, W. A. Bonner, P. England, B. J. Wilkens, B. J. Maegher, L. Nazar, X. D. Wu, M. S. Hedge, C. C. Chang, T. Vankatesan andH. Padamsee,Appl. Phys. Lett 55 (1989) 1138.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Materials Research Laboratory, The Pennsylvania State University, 16802, University Park, PA, USA

    Ruyan Guo, P. Ravindranathan, U. Selvaraj, A. S. Bhalla, L. E. Cross & Rustum Roy

Authors
  1. Ruyan Guo
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. P. Ravindranathan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. U. Selvaraj
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. S. Bhalla
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. L. E. Cross
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Rustum Roy
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Guo, R., Ravindranathan, P., Selvaraj, U. et al. Modified mixed oxide perovskites 0.7Sr(Al1/2B1/2) O3·0.3LaAlO3 and 0.7Sr(Al1/2B1/2) O3·0.3NdGaO3 (B=Ta5+ or Nb5+) for high-T c superconductor substrate applications. J Mater Sci 29, 5054–5058 (1994). https://doi.org/10.1007/BF01151096

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01151096

Keywords

Search

Navigation