Abstract
In this study we have investigated structural attribute of Co+2 doped MgFe2O4. Synthesis of Mg1-xCoxFe2O4 ferrite was carried out using co-precipitation method. The formation of spinal ferrite was confirmed through X-ray diffraction. Lattice parameter found to be 8.376748 ? and crystallite sizes in the range 180-365 ? are observed. Various parameters like dislocation density (?D); mechanical properties (strain), Hopping length {tetrahedral site (LA) and octahedral site (LB)}, Bond length (A-O and B-O), and Ionic radii (rA and rB) were reported. The W-H plot and Size-Strain plots were extensively studied and the results have been correlated.
Highlights
Magnetic nano-particles have become subject of intense research because of their applications in high density magnetic recording, in the technological, medical and industrial applications [1]
In this work we report the cobalt doped magnesium ferrite (Mg0.85Co0.15Fe2O4) by simple chemical route by co-precipitation method
The XRD pattern of Mg0.85Co0.15Fe2O4 was shown in Fig. 2 with peaks (220), (311), (222), (400), (422), (511), and (440) respectively
Summary
Magnetic nano-particles have become subject of intense research because of their applications in high density magnetic recording, in the technological, medical and industrial applications [1]. Magnesium ferrite has cubic structure and it is a soft magnetic n-type semiconductor material. It finds applications in heterogeneous catalysis, adsorption sensors etc. Magnesium ferrite with a chemical formula of MgFe2O4 has an inverse spinel structure, in which half of the trivalent cations occupy the tetrahedral (A) sites and the other half of the trivalent cations and all of the divalent cations fill the octahedral (B) sites [5]. The cation distribution according to the earlier reported reveals that magnesium ions exist in both sites (A and B) but have a strong preference for the octahedral (B) site [13].XRD, FTIR and dielectric studies of Mg–Co nano crystalline ferrites (x=0, 0.05, 0.1, 0.15, 0.2, 0.25) were prepared by the sol–gel method [14]. Dislocation density (ρD); mechanical properties (strain), Hopping length {tetrahedral site (LA) and octahedral site (LB)}, Bond length (A-O and B-O), and Ionic radii (rA and rB) were reported
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