X-ray photoelectron spectroscopic studies of interactions in multicomponent metal and metal oxide thin films

Nicholas Winograd, W. E. Baitinger, J. W. Amy, J. A. Munarin

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Changes in chemical oxidation states in alloys and at solid-solid interfaces were monitored by using x-ray photoelectron spectroscopy. For an oxidized Nichrome surface, the chromium component was selectively converted to chromic oxide while nickel remained in the metallic state. When this surface was overlaid with a 20-angstrom-thick aluminum film, the chromic oxide was reduced to chromium and the aluminum was oxidized to aluminum oxide in a reaction zone consisting of no more than 10 angstroms of the interface. This scheme appeared general for solid-solid contacts and was predicted, to a first approximation, by bulk thermodynamic free energies.

Original languageEnglish (US)
Pages (from-to)565-567
Number of pages3
JournalScience
Volume184
Issue number4136
DOIs
StatePublished - Jan 1 1974

All Science Journal Classification (ASJC) codes

  • General

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