Abstract
Modifying the proportion of the base composition by substituting with suitable dopants and improving the preparation conditions is expected to change the performance of ferrites. In the present study, Mg x Mn 1− x Fe 2O 4 series of ferrites were prepared by, the conventional ceramic technique and the hot-pressed ceramic technique. Hot pressing of Mg–Mn ferrites results in an improvement of their magnetic and micro-structural properties as it controls simultaneously grain growth and porosity. Hot pressing of the Mg–Mn ferrites, however, results in a deterioration of their DC resistivity. The cation distribution has been studied by X-ray analysis and magnetisation. The variation of the saturation magnetisation and Curie temperature with increasing concentration of the Mg 2+ ions can be explained on the basis of cation distribution and Neel's two sub-lattice models. The observed Mössbauer spectra show two hyperfine split sextets with an absence of magnetic relaxation indicating an absence of domain wall oscillations. The variations of the internal magnetic field have been qualitatively explained by taking into account, the predominant super-transferred hyperfine interactions (STHI).
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.
