During the time of synthesis after precipitation of Fe3O4, the post treatment has been conducted with varying volume concentration of diluted HCL. The effect on magnetic properties was studied to analyze at ambient temperature 300K. For... more
During the time of synthesis after precipitation of Fe3O4, the post treatment has been conducted with varying volume concentration of diluted HCL. The effect on magnetic properties was studied to analyze at ambient temperature 300K. For inverse spinal approximately 17nm Fe3O4 nanoparticles, the single domain is found diminishing and superparamagnetism enhancing with a approximation to linear rate for higher concentration.
Nickel ferrite, NixCo1−x Fe2O4, NPs (where x = 0.0, 0.6 and 1.0) were successfully synthesized by a rapid and reproducible CTAB-assisted hydrothermal route. The influence of different hydrolyzing agents on the particle size and magnetic... more
Nickel ferrite, NixCo1−x Fe2O4, NPs (where x = 0.0, 0.6 and 1.0) were successfully synthesized by a rapid and reproducible CTAB-assisted hydrothermal route. The influence of different hydrolyzing agents on the particle size and magnetic behavior of NixCo1−x Fe2O4 NPs was investigated. Particles showed very high phase purity and crystallinity in powder XRD analysis. Compositions of Co, Fe, and Ni in fabricated powders were also determined by AAS and results are in very good agreement with the targeted compositions. Samples hydrolyzed using NH3 showed no significant changes in the particle size and morphology. NH3 hydrolyzed samples were much smaller than their NaOH hydrolyzed counterparts, which was attributed to the strength and concentration of the hydrolyzing agents, NH3 being about 6 times more concentrated than NaOH. This in turn influenced the nucleation rate thus the size of each nucleus formed. Strong temperature and Ni concentration dependence of magnetic parameters was obse...
The wet chemical route of co-precipitation method is used to synthesize ultrafine magnetite for study. Using XRD, the estimated average size was ~24nm and confirmed the phase Fe3O4 with inverse spinal structure. The M-H loop of the Fe3O4... more
The wet chemical route of co-precipitation method is used to synthesize ultrafine magnetite for study. Using XRD, the estimated average size was ~24nm and confirmed the phase Fe3O4 with inverse spinal structure. The M-H loop of the Fe3O4 has investigated the magnetic entities and has confirmed the single domain nature. The paper has reported the magnetization saturation of Iron Oxide nanoparticles (IONs) increases with wetting. The effect of wetting has been discussed from the theoretical point of view. Dependency of magnetic property on the K, a and size for an effect was considerably analyzed in this study.
