Room-temperature reaction of a Ni/Bi2Sr2CaCu2O8 interface

A Ni/Bi2Sr2CaCu2O8 reactive interface has been investigated by x-ray and ultraviolet photoelectron spectroscopy. Nickel reacts with the substrate disrupting BiO bonds along with CuO bonds. This behavior has been explained on the basis of thermodynamics. A complex NiBiSrCaCuO phase formed at the inte...

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Bibliographic Details
Published in:Journal of applied physics 1990-03, Vol.67 (6), p.3184-3187
Main Authors: Kumar, P. S. Asoka, Mahumuni, Shailaja, Kulkarni, Pramada, Mulla, I. S., Chandrachood, M., Sinha, A. P. B., Nigavekar, A. S., Kulkarni, S. K.
Format: Article
Language:English
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Summary:A Ni/Bi2Sr2CaCu2O8 reactive interface has been investigated by x-ray and ultraviolet photoelectron spectroscopy. Nickel reacts with the substrate disrupting BiO bonds along with CuO bonds. This behavior has been explained on the basis of thermodynamics. A complex NiBiSrCaCuO phase formed at the interface, sets up the diffusion barrier for oxygen withdrawal from the substrate at a thickness of ∼10 Å of nickel.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.345400