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Synthesis of superconductors from soluble metal oxo alkoxide precursors

Published online by Cambridge University Press:  31 January 2011

M.W. Rupich ,
Y.P. Liu ,
J. Ibechem  and
J.P. Hachey
M.W. Rupich
Affiliation:
EIC Laboratories, Inc., Norwood, Massachusetts 02062
Y.P. Liu
Affiliation:
EIC Laboratories, Inc., Norwood, Massachusetts 02062
J. Ibechem
Affiliation:
EIC Laboratories, Inc., Norwood, Massachusetts 02062
J.P. Hachey
Affiliation:
EIC Laboratories, Inc., Norwood, Massachusetts 02062
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Abstract

Soluble metal oxo alkoxide precursors are useful for the production of homogeneous, micron-sized YBa2Cu3O7−x powders and the fabrication of superconducting YBa2Cu3O7−x films on large area and nonplanar substrates. This paper describes the synthesis and chemistry of a series of soluble metal oxo alkoxide precursors for the YBa2Cu3O7−x superconducting material and the effect of the thermal processing conditions on the formation of the superconducting phase. We have found that the direct conversion of the metal oxo alkoxide precursors to an amorphous or crystalline YBa2Cu3O6.5 phase without the intermediate formation of the individual metal oxides or carbonates allows the formation of the superconducting phase at temperatures as low as 720 °C. The prevention of the intermediate formation of the metal oxide and carbonate phases is achieved by the controlled thermolysis of the metal oxo alkoxide precursors in an inert atmosphere. The precursors have potential use in the low-temperature deposition of films on large area or nonplanar surfaces and for the production of homogeneous powders.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 7 , July 1993 , pp. 1487 - 1496
Copyright
Copyright © Materials Research Society 1993

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References

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