Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-10T05:50:25.016Z Has data issue: false hasContentIssue false
  • English
  • Français

REBa2ZrO5.5 (RE = La, Ce, Eu, and Yb): Synthesis, characterization, and their potential use as substrates for YBa2Cu3O7–δ superconductors

Published online by Cambridge University Press:  31 January 2011

R. Jose ,
Asha M. John ,
J. Kurian ,
P. K. Sajith  and
J. Koshy
R. Jose
Affiliation:
Regional Research Laboratory (CSIR), Trivandrum-695 019, India
Asha M. John
Affiliation:
Regional Research Laboratory (CSIR), Trivandrum-695 019, India
J. Kurian
Affiliation:
Regional Research Laboratory (CSIR), Trivandrum-695 019, India
P. K. Sajith
Affiliation:
Regional Research Laboratory (CSIR), Trivandrum-695 019, India
J. Koshy*
Affiliation:
Regional Research Laboratory (CSIR), Trivandrum-695 019, India
*
a)Author to whom all correspondence should be addressed.
Get access

Abstract

A new class of complex perovskites REBa2ZrO5.5 (where RE = La, Ce, Eu, and Yb) have been synthesized and sintered as single phase materials by the solid state reaction method. The structure of these materials was studied by x-ray diffraction, and all of them were found to be isostructural, having a cubic perovskite structure. X-ray diffraction and resistivity measurements have shown that there is no detectable chemical reaction between YBa2Cu3O7–delta; and REBa2ZrO5.5 even under severe heat treatment at 950 °C, and that the addition of REBa2ZrO5.5 up to 20 vol.% in YBa2Cu3O7–δ shows no detrimental effect on the superconducting properties of YBa2Cu3O7-δ. Dielectric constants and loss factors are in the range suitable for their use as substrates for microwave applications. Thick films of YBa2Cu3O7–δ fabricated on polycrystalline REBa2ZrO5.5 substrates gave a zero resistance transition temperature Tc(0) ∼ 92 K, indicating the suitability of these materials as substrates for YBa2Cu3O7–δ.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 11 , November 1997 , pp. 2976 - 2980
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Wu, X. D., Dutta, B., Hegde, M. S., Inam, A., Venkatesan, T., Chase, E. W., Chang, C. C., and Howard, R., Appl. Phys. Lett. 54, 179 (1989).CrossRefGoogle Scholar
2.Humphreys, R. G., Satchell, J. S., Chem, N. G., Edwards, J. A., Goodyear, S. W., Blenkinsop, S. E., Dosser, O. D., and Cullis, A. G., Supercond. Sci. Technol. 3, 38 (1990).CrossRefGoogle Scholar
3.Pinto, R., Goyal, N., Pai, S. P., Apte, P. R., Gupta, L. C., and Vijayaraghavan, R., J. Appl. Phys. 73, 5105 (1993).CrossRefGoogle Scholar
4. Julia Phillips, M., J. Appl. Phys. 79, 1829 (1996).CrossRefGoogle Scholar
5.Koshy, J., Kumar, K. S., Kurian, J., Yadava, Y. P., and Damodaran, A. D., Physica C 234, 211 (1994).CrossRefGoogle Scholar
6.Koshy, J., Kumar, K. S., Kurian, J., Yadava, Y. P., and Damodaran, A. D., J. Am. Ceram. Soc. 78, 3088 (1995).CrossRefGoogle Scholar
7.Koshy, J., Kurian, J., Thomas, J. K., Yadava, Y. P., and Damodaran, A. D., Jpn. J. Appl. Phys. 33, 117 (1994).CrossRefGoogle Scholar
8.Zhang, X. and Wang, Q., J. Am. Ceram. Soc. 74, 2846 (1991).CrossRefGoogle Scholar
9.Wells, A. F., Structural Inorganic Chemistry, 5th ed. (Clarendon Press, Oxford, 1996), p. 279.Google Scholar