Correlation of internal strain and size with electrical and magnetic properties of Ce3+-doped manganese ferrimagnetic nanoparticles

In the present work we made an attempt to found the correlation between the internal strain and size effect on the structural electrical and magnetic properties of influence of Ce3+-doped manganese ferrite nanoparticles. The XRD results showed that the Ce3+-doped Mn2+ ferrite nanoparticles exhibit spinel cubic structure with an average crystallite size varying from 15 to 10 nm and it was calculated by using Williamson–Hall (W–H) and Scherrer method. The intrinsic strain is estimated from the XRD peak broadening analysis. The TEM micrographs confirm the spherical nature of the samples and particle sizes vary from 15 to 6 nm. Further the particle size decreases with increasing ce3+ content as a result this internal strain increases. The dielectric constant increases with increase in the frequency; this phenomenon is explained on the basis of Koop’s phonological theory. The AC conductivity was explained by hopping mechanism. The temperature-dependent susceptibility measured at 100 Oe and the irreversibility temperature vary with Ce3+ concentration. The hysteresis curves of all samples reveal the ferromagnetic behavior. This study allowed us to understand potentiality of cerium-doped Manganese ferrite nanoparticles in current temporary magnetic technology.