Abstract
Mg-substituted lithium ferrite Li0.5MgxFe2.5−xO4, where (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0), synthesized through sol–gel auto-combustion method was investigated for their microstructure, cation distribution and magnetic ordering. The results of XRD, SEM and Mossbauer spectroscopy indicate that the Mg2+ concentration plays an important role both in the distribution of cations by spinel lattices and in the change of magnetic fields on 57Fe nuclei in octahedral and tetrahedral environments. By the method of X-ray diffraction structural values such as lattice constant and cation distribution by octahedral and tetrahedral sublattices were determined. Also dependencies of X-ray density, oxygen parameter, ion radii, and length of cation–anion bonds on concentration of doped element (x) were investigated. Rietveld structural refinements using the XRD data were performed on the samples showed that Mg2+ ions replace Fe3+ ions both in tetrahedral and octahedral positions in the ratio of 8:2, while Li+ ions are localized in octahedral positions. Received 57Fe Mossbauer spectra confirmed this structural model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
