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Investigation of the surface composition of MgOZnO solid solutions by X-ray photoelectron spectroscopy
Authors:A. Cimino  G. Minelli  B.A. De Angelis
Affiliation:Centro di Studio sulla Struttura e Attivita`Catalitica di Sistemi di Ossidi del Consiglio Nazionale delle Ricerche (C.N.R.), Istituto di Chimica Generale e Inorganica, Universita`di Roma, Rome Italy;Laboratori Ricerche di Base, SNAMPROGETTi S.p.A., 00015 Monterotondo, Rome Italy
Abstract:The surface composition of well-characterized samples of solid solutions MgO/>ZnO, containing up to 25 mol% ZnO, has been studied by recording the intensity of XPS and AES peaks. The influence on the measured intensifies of factors such as surface carbonation and the energy of the measured peaks has been pointed out. The Zn concentration in the outer layer has been found to be considerably higher than in the bulk. The extent of surface enrichment in Zn is in reasonable agreement with the thermodynamic prediction based on the ideal solution approximation.</td> </tr> <tr> <td align=
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