57Fe and 119Sn Mössbauer studies of electron exchange processes in spinels of composition Zn2+[Zn (1-x) 22+Sn (1+x) 24+Fe(1-x2+]O4

Michael J Tricker, P. P. Vaishnava, J. F. Marshall, J. D. Donaldson, R. M A Grimsey

Research output: Contribution to journalArticle

Abstract

Phases in the spinel series Zn2+[Zn (1-x) 22+Sn 1+x 2Fe1-x3+Fex2+]O4 have been prepared and studied by 57Fe and 119Sn Mössbauer spectroscopy. For 0 = x = 0.75 the spinels remain paramagnetic down to 80 K. Evidence is found for fast localized electron hopping between adjacent Fe2+ and Fe3+ ions and also for the complete delocalization of electrons into a conduction band. A model which quantitatively accounts for this latter phenomenon is presented. © 1981.

Original languageEnglish
Pages (from-to)95-99
Number of pages5
JournalJournal of Inorganic and Nuclear Chemistry
Volume43
Issue number1
Publication statusPublished - 1981

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