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Interactions between Thick Film Superconductors and Various Metal Substrates

Interactions between Thick Film Superconductors and Various Metal Substrates Interactions between stainless steel and silver and gold based thick film conductors and YBa2Cu3O7 thick film superconductors were studied by SEM and EDX. The stainless steel reacted with the superconducting layer, forming a BaFeO compound on the interface, while BaOdepleted YBa2Cu3O7 compound transformed into insulating Y2BaCuO5 compound. When YBa2Cu3O7 is fired on a gold thick film conductor, a thin layer of Y2BaCuO5 compound forms between the conductor and the superconducting film. In the case of a thin Ag conductor, BaO diffused through the silver film and reacted with alumina ceramic to the depth of a few m. When a thicker silver layer 4050 m was used, diffusion did not occur. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microelectronics International Emerald Publishing

Interactions between Thick Film Superconductors and Various Metal Substrates

Microelectronics International , Volume 9 (1): 2 – Jan 1, 1992

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
1356-5362
DOI
10.1108/eb044462
Publisher site
See Article on Publisher Site

Abstract

Interactions between stainless steel and silver and gold based thick film conductors and YBa2Cu3O7 thick film superconductors were studied by SEM and EDX. The stainless steel reacted with the superconducting layer, forming a BaFeO compound on the interface, while BaOdepleted YBa2Cu3O7 compound transformed into insulating Y2BaCuO5 compound. When YBa2Cu3O7 is fired on a gold thick film conductor, a thin layer of Y2BaCuO5 compound forms between the conductor and the superconducting film. In the case of a thin Ag conductor, BaO diffused through the silver film and reacted with alumina ceramic to the depth of a few m. When a thicker silver layer 4050 m was used, diffusion did not occur.

Journal

Microelectronics InternationalEmerald Publishing

Published: Jan 1, 1992

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