Synthesis, Investigation on Structural and Magnetic Behaviors of Spinel M-Ferrite [M = Fe; Zn; Mn] Nanoparticles from Iron Sand

Structure and Spesific Absorption Rate Identification of Mn_0.25Fe_2.75O₄/NiCo₂O₄ Magnetic Nanocomposites

“…The Mn0,25Fe2,75O4/NiCo2O4 nanocomposite consisted of two combined phases of Mn0,25Fe2,75O4 and NiCo2O4 which proved the composite process was successful. The results of the refinement of each data are following with previous research on Mn0,25Fe2,75O4 and NiCo2O4 [7,9,25]. Mn0,25Fe2,75O4/NiCo2O4 nanocomposites at the angle 30,14˚; 31,26˚; 35,51˚; 36,84˚; 43,41˚; 45,04˚; 53,53˚; 55,81˚; 57,00˚; 59,57˚; 62,82˚; 65,04˚; 75,62 and 77,18˚.…”

“…Several applications of Fe3O4 which have been investigated and reported are Fe3O4 nanomaterial as raw material for catalysts, sensors [2], drug delivery systems, hyperthermia therapy, antibacterial [1], bioseparation [4], supercapacitors, and adsorbents [5]. There are many ways to synthesize Fe3O4 including hydrothermal [6], sonochemical [7], green-synthesis [3] and coprecipitation [8,9]. One of the methods that are often used is coprecipitation method.…”

Clustering of MnFe2O4 nanoparticles and the effect of field intensity in the generation of heat for hyperthermia application

“…However, some weak reflections of impure phase were noticed, with a shifting of cation-sensitive peaks (220) and (440), and the approximated lattice parameter is also found to vary slightly from its standard values (to 8.43 Å, from 8.51 Å) [13]. This possibly resulted from oxidation through the adsorption and ionization of oxygen ions at the surface layer of the nanoparticles, or oxidation of residual MnFe 2 O 4 particles [14,15]. Pauline et al [16] pointed out that the co-existence of Fe 2+ and Fe 3+ ions resulted in the formation of magnetite phase Fe 3 O 4 .…”

Large-scale synthesis of mixed valence K3[Fe2S4] with high dielectric and ferrimagnetic characteristics

“…The magnetisation value of 1 (15.23 A m 2 kg −1 at 300 K) lies in the range of 3d transition metal ferrites with inverse-spinel crystal structures, such as CoFe 2 O 4 (41 A m 2 kg −1 ), 32 NiFe 2 O 4 (19.97 A m 2 kg −1 ), 33 and MnFe 2 O 4 (17.4 A m 2 kg −1 ), 34 as the well-known ferrimagnetic compounds, although the magnetization mechanism could be significantly different due to the dissimilarities in the crystal structure and coordination chemistry.…”