Chemical synthesis, structural and magnetic properties of nano-structured Co–Zn–Fe–Cr ferrite

Microwave Assisted Synthesis and Characterization of CoxZn1−xCr0.5Fe0.5O4 Nanoparticles

“…and Fe 3? ions partially filled at both sites it is due to its observed mixed ferrite [(Co 0.3 Zn 0.1 Fe 0.6 )(Co 0.6 Fe 1.4 )]O 4 . The similar results were also obtained by Alone et al [17] in which they investigated on the synthesis, structural and magnetic properties nano-structured Co-Zn-Fe-Cr ferrite. In another study, Babu et al [18] To our knowledge, no reports are available in the literature for two-substitutional effect of both magnetic Co and Cr at octahedral and tetrahedral site respectively in cobalt ferrite.…”

“…The increase in the coercivity values with increasing Co-content is due to the increase in magnetocrystalline anisotropy (K1). Compared with larger magnetocrystalline anisotropy for Co ferrites, Cr and Zn ferrites have negative magnetocrystalline anisotropy [17]. Also in the present case Zn 2?…”

“…The substitution of trivalent ions like Cr 3? is likely to increases the resistivity and decreases the saturation magnetization (Cr-substitution is expected to reduce the exchange interaction between A-and B-sites since it has preferential octahedral site occupancy) [17,[35][36][37][38]. It has been reported that the saturation magnetization (Ms), remanent magnetization (Mr), and coercive force (Hc) decreases monotonously when an appropriate amount of Cr 3?…”

Finite size effect on Sm3+ doped Mn0.5Zn0.5Sm Fe2−O4 (0≤x≤0.5) ferrite nanoparticles

“…ball milling, chemical co-precipitation, sol-gel, hydrothermal, citrate precursor, modified oxidation, sonochemical reaction etc. [27][28][29][30][31][32][33][34][35]. The different Sm 3 þ ions concentration doped Mn-Zn mixed ferrite nanoparticles were prepared by simple and economic chemical co-precipitation method.…”

Influence of synthesis approach on structural and magnetic properties of lithium ferrite nanoparticles

“…Nanophase ferrites have attracted much attention due to their technological importance in various fields, such as microwave devices, high speed digital tapes and disk recording, ferro-fluids, catalysis, and magnetic refrigeration systems. The physical properties of the nanomaterials are predominantly controlled by the surface effects than by the grains [7]. Nanocrystalline ferrites exhibit unusual magnetic properties such as single domain behaviour, superparamagnetism and reduced magnetization, which are not observed in the bulk material [8,9].…”