Preparation and characterization of core–shell structured Co/SiO2 nanosphere

Effect of Powder Morphologies on the Property of Conductive Silicone Rubber Filled with Carbonyl Nickel Powder

“…They can absorb and attenuate the incident electromagnetic waves, then crunch the electromagnetic energy into heat energy, or weaken the electromagnetic waves' interference. [8][9][10] Carbonyl iron powders and carbonyl nickel powders have been applied in the electronic industry as magnetic fillers due to their high saturation magnetization, superior stability, and enhanced dispersion. [11][12][13][14] Recently, it has been proved that the different morphology of carbonyl iron powder can influence the electromagnetic properties of the polymer filled with the powder.…”

Amorphous Slater-Pauling like behaviour in magnetic nanoparticles alloys synthesized in liquids

“…Values above 80 emu/ g are found when the NPs are larger than 25 nm, [9][10][11] when very dense surfactants are used like oleic acid 12 or when the NPs are successfully encapsulated or placed inside a coreshell structure before oxidation could occur. [13][14][15][16] For NPs becoming smaller than 15 nm, saturation magnetization below 30 emu/g are usually observed. They are presumably originating from the formation of a non-magnetic oxide shell around the NPs [17][18][19][20] or from interaction with a non-magnetic shell (magnetization reduction as the shell thickness increases in W 21 and SiO 2 13 ).…”

Structural and magnetic properties of sputter deposited cobalt–silica nanocomposite thin films

“…Several efforts have been made to stabilize the residual magnetization of nanoparticles under zero applied field, for instance by embedding them in an antiferromagnetic matrix [9]. A shell of CoO or SiO 2 around Co particles could play such a role [11][12][13]. The studies on magnetic properties of sputter deposited Co-SiO 2 thin films are limited in the literature [14,15].…”