Effects of Ce3+ doping on the structure and magnetic properties of Mn-Zn ferrite fibers

Abstract

Ce 3+ -doped Mn-Zn ferrite fibers were successfully prepared by the organic gel-thermal decomposition method from metal salts and citric acid. The composition, structure, and magnetic properties of these ferrite fibers were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The results show that Mn 0.2 Zn 0.8 Fe 2−x Ce x O 4 (x = 0-0.04) fibers are featured with an average grain size of 11.6-12.7 nm, with diameters ranging between 1.0 to 3.5 μm and a high aspect ratio (length/diameter). The Ce 3+ ion doping has not resulted in crystal structural changes of the Mn-Zn ferrite phase and all the as-prepared ferrite fibers have a simple spinel phase structure, although this influences the morphologies of Mn 0.2 Zn 0.8 Fe 2−x Ce x O 4 ferrite fibers possibly owing to the lattice distortion and internal-stress. Both the lattice constant and grain size increase slightly with the increase of the Ce 3+ ion doping content. The soft magnetic properties of Mn-Zn ferrite fibers can be improved by a small amount of Ce 3+ ion doping with an increase of the saturated magnetization and a decrease of the coercivity.

Synthesis and Characterization of Ce3+-Doped Ni0.5Cd0.5Fe2O4 Nanoparticles by Sol–Gel Auto-Combustion Method

“…The Ce ion is known to offer substantial hybridization of the 4f states with 3d bands due to the existence of a larger 4f band. The improvement of electromagnetic characteristics of Li ferrite after Ce doping [34] and the enhancement of saturation magnetization with a decrease in coercivity in Ce doping Mn-Zn ferrite [35] are both interesting topics. Many methodologies are used for the synthesis of nanoparticles, either by an electrochemical method, an electrodeposition method [36], or a cathodic electrodeposition method (CED), etc.…”

Enhancing the electro catalytic activity of manganese ferrite through cerium substitution for oxygen evolution in KOH solutions

“…As shown in Fig. 3a no changes occurred in the position of the reections due to the inclusion of Ce 3+ for Fe 3+ , only a variation in the lattice constant 21 values were observed because of a great deviation in the ionic radius of metal ions (Ce 3+ ¼ 1.3 Å; Fe 3+ ¼ 0.64 Å). The variation of lattice constant values derived from XRD data are given in Fig.…”

A review on MnZn ferrites: Synthesis, characterization and applications

“…Also, the eddy current losses related to electrical resistivity were also reduced. Xiang et al [173] prepared MnZn ferrite particles with Ce 3+ doping and observed that no impurity phase was detected in the XRD pattern. It confirmed that Ce ions entirely got dissolved in spinel structure.…”