A series of polycrystalline ferrite samples with the composition
MnxZn1-xFe2O4 (x=0.0, 0.25, 0.5, 0.75, and 1.0) were prepared by the standard
ceramic method. X-ray diffraction pattern confirm the existence of single phase
of cubic spinel crystal structure with the lattice parameter ranges from 8.419Å
(for ZnFe2O4) to 8.478 Å (for MnFe2O4). This behavior was attributed to the
ionic radii. The Mössbauer spectra were analyzed into two subspectra, one for
the tetrahedral A–site and the other for the octahedral B–site. The Mössbauer
parameters were determined and discussed for the studied system. Zn–ferrite
shows a central paramagnetic phase C while Mn–ferrite shows six line Zeeman
pattern. The cation distribution was estimated from the analysis of the
Mössbauer spectra as well as the x–ray diffraction patterns. The results showed
that Zn ions occupy mainly A-site while Mn and Fe ions are distributed between
A- and B- sites.