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Synthesis of superconductors from metal neodecanoates

Published online by Cambridge University Press:  31 January 2011

T.N. Bowmer  and
F.K. Shokoohi
T.N. Bowmer
Affiliation:
Bellcore, Red Bank, New Jersey 07701
F.K. Shokoohi
Affiliation:
Bellcore, Red Bank, New Jersey 07701
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Abstract

Metal-organic precursors can facilitate the production of superconducting thin films on large area substrates for microelectronic device applications. This paper describes the chemistry that occurs during the thermal processing of yttrium-, barium-, and copper-neodecanoate mixtures into a superconducting material, YBa2Cu3O7−x. Intermediates such as metal carbonates and oxides are identified by combining thermogravimetry with infrared spectral and x-ray diffraction analysis. Changing from argon to oxygen atmospheres increased decomposition rates and metal oxide formation. We found that (1) a low temperature (500–600 °C) decomposition in an oxygen-poor atmosphere, (2) a high temperature (>925 °C) annealing step in an oxygen-rich atmosphere, and (3) slow cooling to 50 °C are all required to produce uniform superconducting films.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 4 , April 1991 , pp. 670 - 676
Copyright
Copyright © Materials Research Society 1991

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