Metallization channels in ion-induced decomposition of molybdates and niobates

• Published in: Chemical physics letters Vol. 133; no. 2; pp. 171 - 175
• Main Authors: Ho, Shu Fang, Contarini, Salvatore, Rabalais, J.Wayne
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 09.01.1987; Elsevier Science
• Subjects: Chemistry; Exact sciences and technology; Inorganic chemistry and origins of life; Kinetics and mechanism of reactions; Argon Ions; Molybdenum IV Oxides; Tetravalent metal Compounds; Chemical reduction; Sodium Molybdates; Ion irradiation; Niobium «V» Oxides; Transition metal Compounds; Pentavalent metal Compounds; Chemical decomposition; Sodium Niobates
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/0009-2614(87)87044-6

X-ray photoelectron spectroscopic analysis of 4 keV Ar + bombarded Na 2MoO 4, NaNbO 3, MoO 2, and Nb 2O 5 reveals the formation of lower valence metal oxides in all cases but reduction to the metallic state only for the molybdate and niobate samples. Steady-state concentrations for oxidation states of (VI), (V), (IV) and (0) for molybdate and (V), (IV), (II), and (0) for niobate are determined following ion bombardment. Results are discussed in terms of an ion-induced decomposition mechanism.