A review of spinel-type of ferrite thick film technology: fabrication and application

Observation of intrinsic fluorescence in cobalt ferrite magnetic nanoparticles by Mn2+ substitution and tuning the spin dynamics by cation distribution

“…Herein, we assume that our as-synthesized NFs have a spherical morphology. The specific surface area (S) and dislocation density (d L ) of the NF samples were obtained using eqn (10), as follows:…”

“…According to the obtained values of the specific surface area, we observed that the ''S'' first increased, and then started to decrease with an increase in Mn 2+ ion concentration. According to eqn (10), the specific surface area depends on both the theoretical density and crystallite size. The observed variation in the NF samples can be correlated with the presence of defect states in the samples.…”

“…6 Thus, the properties of these ferrites can be effectively tuned by varying the shape and size of their particles, chemical composition, surface modification, doping, and site occupancies of their cations. 7 Moreover, these materials have numerous current and prospective applications in the field of science and technology such as EMI shielding, [8][9][10] highdensity storage devices, magneto-optical devices, nanofluids, spintronic devices, transformer cores, and biomedical applications (magnetic resonance imaging, therapeutics, targeted drug delivery, and magnetic fluid hyperthermia [11][12][13][14][15][16] ).…”

Oxidic 2D Materials

“…The variety of remarkable physical, chemical, electrical and magnetic properties of spinels can be explained by the distribution possibilities of the cations in spinel bulk crystals [179]. This results in superior chemical stability and mechanical hardness [180] in certain cases. Magnetic anisotropy can be incorporated by Co ions [181].…”

“…In general, spinel-type ferrite oxide materials are very flexible for application as electromagnetic devices due to their remarkable electrical and magnetic properties [180] and are used as conductors, dielectrics, resistors or magnetic sensors [190][191][192]. Compared to garnets, ferrite films are characterized by low conductivity and high saturation magnetizations and Curie temperatures, which makes them ideal for the use in high frequency applications [186].…”