Highly ordered mesoporous NiFe(2)O(4) with excellent microwave absorption properties has been synthesized by using mesoporous silica (KIT-6) as a hard template.

Ferrites with spinel structure are the most widespread materials in radio engineering, electronics and communication industry, microwave devices and computer facilities. The change of synthesis temperature of ferrites results in cation redistribution of iron, which updates crystal properties, as macroscopic magnetic properties of ferrites. Among this extensive class of compounds nickel and copp...

Nickel zinc ferrite nanoparticles (Ni0.20Zn0.44Fe2.36O4) have been produced at room temperature, without calcination, using a reverse micelle process. Particle size is approximately 7 nm as determined by x-ray powder diffraction and transmission electron microscopy. Saturation magnetization values are lower than anticipated, but are explained by elemental analysis, particle size, and cation occ...

Crystalline and nanostructured cobalt (CoFe2O4), nickel (NiFe2O4), zinc (ZnFe2O4) and manganese (MnFe2O4) spinel ferrites are synthesized with high yields, crystallinity and purity through an easy, quick, reproducible and low‐temperature hydrothermal assisted route starting from an aqueous suspension of coprecipitated metal oxalates. The use of water as a reaction medium is a further adva...

Chemical sensors of homogenous particles, act as active centres, are envisaged for adsorption/desorption water molecules. The molecules lined up with surface the sensor device. material was prepared via efficient chemical co-precipitation method. ruthenium-doped nickel ferrite endows ultra-sensitivity humidity i.e. 4.04 and 4.37 M?/% relative at low- mid-range, respectively rapid response/recov...

High-density fine-grained Ni0.5Zn0.5Fe2O4 ferrite ceramics were synthesized by spark plasma sintering (SPS) in conjunction with high energy ball milling. The precursor powders were milled for 20 h, 40 h, and 60 h, respectively, and the milled powders were all sintered for 5 min at 900 ̊C. All the samples exhibit a single spinel phase. With increasing of the ball milling time, the relative densit...

Abstract It is presented a “shocking thermal treatment” methodology as modification to the molten salts process rapidly obtain pure phase nickel ferrite nanoparticles within high-scalable green synthesis scheme. Analysis from X-ray diffraction and electron microscopy (SEM TEM) confirms formation of nanostructures, with most frequent crystallite sizes between 55-85 nm. Room temperature magnetic ...