57Fe and 119Sn Mössbauer studies of electron exchange processes in spinels of composition Zn2+[Zn2+Sn4+Fe(1−x2+]O4

Autor:	Michael J. Tricker, J. F. Marshall, J.D. Donaldson, R. M. A. Grimsey, P. P. Vaishnava
Rok vydání:	1981
Předmět:	Polymers and Plastics Condensed matter physics Chemistry Spinel Electron exchange Electron engineering.material Ion Paramagnetism Crystallography Delocalized electron Mössbauer spectroscopy Materials Chemistry engineering Composition (visual arts)
Zdroj:	Journal of Inorganic and Nuclear Chemistry. 43:95-99
ISSN:	0022-1902
DOI:	10.1016/0022-1902(81)80442-3
Popis:	Phases in the spinel series Zn2+[Zn (1−x) 2 2+Sn 1+x 2 Fe1−x3+Fex2+]O4 have been prepared and studied by 57Fe and 119Sn Mossbauer 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1eb39337eacf6da12e07c7aedda0a996 https://doi.org/10.1016/0022-1902(81)80442-3 Zobrazit plný text záznamu