Abstract
The structural and magnetic properties of Co1−xMnxFe2O4 (0 ≤ x ≤ 0.4) spinel ferrites synthesized by combustion route have been studied. The thermogravimetric study reveals that the stable phase formation takes place above ∼620 ◦ C. Structural characterization of all the samples was carried out by using the X-ray diffraction technique. The X-ray diffraction study reveals that the lattice constant of cobalt ferrite increases with the increase of Mn content. Room temperature magnetization measurements showed that for the substitution of Co by Mn, there is an initial increase in the saturation magnetization (Ms) and remanence (Mr) for x = 0.0 to x = 0.3 and decrease for x = 0.4. The coercivity of the samples increases with increase of Mn content. The sample Co0.7Mn0.3Fe2O4 exhibit the superior magnetic properties, which can be further employed to form magnetoelectric (ME) composites useful for sensor applications.
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