Surface and bulk cation distribution of the spinel system ZnxMg1−xFe2O4

N. Nava, J. Jacobs, A. Garcia, J.J.W.M. Rosink, M.A. Valenzuela, L.J. IJzendoorn, van, H.H. Brongersma

    Research output: Contribution to journalArticleAcademicpeer-review

    1 Citation (Scopus)


    ZnxMg1-xFe2O4 mixed oxide spinels (x=0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) were prepared by conventional solid state reaction method. Bulk and surface characterization of these ferrites were carried out by different techniques. The ratios Zn/Fe and Mg/Fe determined by PIXE and AAS were nearly as expected from the synthesis mixture, i.e. following the substitution model. XRD shows only a spinel structure (fcc) with increasing lattice parameter as x increases from 0 to 1. The bulk ratios of tetrahedral to octahedral sites occupied by Fe cations measured by NGR are in good agreement with the theoretical bulk stoichiometry. LEIS results indicate a Mg substitution by Fe cations at the surface. Only octahedral sites are proposed at the surface. The transition from inverse to normal spinel was follow through NGR-spectra occurring at x=0.4.
    Original languageEnglish
    Pages (from-to)431-443
    Number of pages13
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Issue number6
    Publication statusPublished - 1996


    Dive into the research topics of 'Surface and bulk cation distribution of the spinel system ZnxMg1−xFe2O4'. Together they form a unique fingerprint.

    Cite this