Dielectric, magnetic hyperthermia, and photocatalytic properties of ZnFe2O4 nanoparticles synthesized by solvothermal reflux method

Superparamagnetic and photocatalytic activity of CoCe0.02Dy0.02Fe1.96O4 nanoparticles synthesized by citrate-gel autocombustion technique

“…During the experiments, we observed that the colour of MB changed to light blue and eventually to a clear solution with degradation process. The decolourization of MB is not an indication of mineralization as it may be converted to a colourless substances [12,13]. The change in concentration of MB as a function of time in the presence of asprepared samples is shown in Fig.…”

Structural, morphological and electronic properties of cadmium cobalt ferrite nanoparticles

“…The percentage of porosity (P) of the ferrite sample was found using the relation (2) where d x is the X-ray density &d E is the experimental density. It can be understood that the higher Cd-contents revealed high porosity percentage when compared with low Cd-contents.…”

“…Ferrites having their specialized characteristics like low dcelectrical conductivity and electrical losses...etc, variation at low to high frequencies creates distinguished industrial employment with advanced technology [1]. Specifically, these were quite useful for filters, satellite communication, magnetic tapes, memory devices, electrical components, antenna devices, permanent magnets, soft magnets, humidity sensors, gas sensors, photo catalyst, ferro-fluids, transformer & inductor cores, drug delivery system, actuators, microwave absorbers, magnetic recording media, magnetic hyperthermia treatment, magneto caloric refrigeration, magnetic resonance imaging (MRI), RADAR absorbers, aircrafts, electromagnetic shields etc [1,2]. However, the nanoferrites were almost confined to microwave device applications (phase shifters, circulators, isolators) because of their considerable low electrical conductivity and dielectric losses at gigahertz frequency range [1,3].…”

In Situ Electrochemical Formation of a Core‐Shell ZnFe2O4@Zn(Fe)OOH Heterostructural Catalyst for Efficient Water Oxidation in Alkaline Medium

“…The oxygen stretch from the heavier ZnO 4 appears at~648 cm À 1 while that of FeO 4 is at~715 cm À 1 . [24,25] Additionally, F2g (2) and F2g (3) modes corresponding to vibrations of octahedral groups can also be seen. The Eg pair is due to symmetric bending of oxygen with respect to cations in the tetrahedral sites.…”

“…The high frequency first order mode A1g, above 600 cm À 1 ( Figure S1B, supporting information), is attributed to symmetric stretching of oxygen atoms along the cationoxygen bonds in the tetrahedral co-ordination. [24,25] The presence of a doublet mode suggests that ordered sub-lattices of both ZnO 4 and FeO 4 co-exist in the tetrahedral site of ZnFe 2 O 4 which implies some form of phase inversion. The oxygen stretch from the heavier ZnO 4 appears at~648 cm À 1 while that of FeO 4 is at~715 cm À 1 .…”