Structural, thermal, dielectric and magnetic properties of NiFe2O4 nanoleaf

Effect of fuel-to-oxidant ratio on phase constituents, microstructure and magnetic properties of NiFe2O4-based composite nanopowder synthesized by sol–gel auto-combustion method

“…The maximum M s value of 60.12 emu/g was obtained for sample S0.8 which has the highest amount of FeNi 3 phase. The M s value of NiFe 2 O 4 calculated using Neel's sublattice theory is reported to be 50 emu/g, and the stated value for its nanoparticles is equal to 46.53 emu/g [33]. Table 3 represents that the amount of NiFe 2 O 4 in sample S0.8 is equal to 47.1 wt%.…”

Gram scale synthesis of single crystalline nano-octahedron of NiFe2O4: Magnetic and optical properties

“…The coecricity (H c ) is esitmated to be 69 Oe from hystersis loop which is less than bulk value of 100 Oe and Ni ferrite nanostructure such as hollow nanosphere [9], nanorod [11], nanowires [8], and nanochains [8]. Nevertheless, the observed coercivity of nano-octahedran is greater than nanosphere [12], nanoleaf and nanoparticles [10]. The remanent magnetization of value is 9.8 emu/g is observed form room temperture of Niferrtite octahedron.…”

“…The saturation magnetization (Ms) is measured to be 55.1 emu/g which is slightly less than bulk value of saturation magnetization (56 emu/g) [1]. However, it is 7 highest among previously reported nanostructure of Ni ferrite such as nanosheet [15], necklace-shaped [16], nanoparticles [18], hollow nanosphere [9], nanoleaf and nanoparticles [10], nanorod [11], nanosphere [12], nanowires and nanochains [8]. The coecricity (H c ) is esitmated to be 69 Oe from hystersis loop which is less than bulk value of 100 Oe and Ni ferrite nanostructure such as hollow nanosphere [9], nanorod [11], nanowires [8], and nanochains [8].…”

“…At nanoscale dimensions, the properties of Ni ferrite have different behavior as compared to bulk material. Therefore, recently various kind of Ni ferrite nanostructures have been fabricated using different method such as nanowires by PEG assisted co-precipitation method [8], hollow sphere by hydrothermal [9], nanoleaf by solvothermal [10], nanorod and nanoparticle [11], and nanosphere by solvohermal [12], and nanorods via a PEG-assisted route [13].…”

Crystal structures and magnetic properties of polyethylene glycol (PEG-4000) and silica-encapsulated nickel ferrite (NiFe2O4) nanoparticles

“…[11], have advantages over the physical methods because low cost, reaction taking place at room temperature and large scale production possibility [12]. Between these methods, co-precipitation method is the most effective method and relatively simple.…”