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.
|Number of pages||5|
|Journal||Journal of Inorganic and Nuclear Chemistry|
|Publication status||Published - 1981|