Synthesis and study of magnetic properties of NiFe2O4 nanoparticles by PVA assisted auto-combustion method

Abstract

NiFe 2 O 4 nanoparticles are prepared by a simple and cost-effective method using via polyvinyl alcohol assisted sol-gel auto-combustion method. The X-ray diffraction result indicated that the synthesized nanoparticles have only the inverse spinel structure without the presence of any other phase impurities. HR-SEM and TEM images showed that the particles are spherical shape with particle size in the range *11 nm. The magnetic property of these nanoparticles is studied for the enlightening ferrimagnetic behaviour at room temperature. The value of the magnetic saturation (M s ) is 44.3 emug -1 , remanent magnetization (M r ) is 19.8 emug -1 and coercive force (H c ) is 672.02 Oe.

Study on the Electrochemical Reaction Mechanism of NiFe2O4 as a High-Performance Anode for Li-Ion Batteries

“…The characterized XRD peaks depicted that the as-synthesized NiFe 2 O 4 had a pure crystalline phase due to the homogeneous mixing of cations during the sol hydrolysis and subsequent condensation steps. The lattice parameter calculated from the most intense peak (311) of XRD pattern is a = 8.330 Å, which corresponds to a cell volume of 578.14 Å 3 (Table ) and is in agreement with previously reported values. ,, The crystallite size of the synthesized NiFe 2 O 4 is ∼20 nm, calculated by using Scherrer’s equation from the broadening of the (220) and (311) reflection of the spinel phase.…”

Cytotoxic Effect of Nanocrystalline MgFe2O4 Particles for Cancer Cure

“…The second weight loss in the temperature range of 150-220 ∘ C is due to the dehydration of OH group in NO 3 − constituent, the oxidation of complexes, and formation of semiorganic carbon metal/metal oxide [39,40]. The third stage of weight loss occurs between 220 and 400 ∘ C. This is due to the formation of equivalent metal oxides and the spinel phase [41,42]. There is no weight loss observed above 400 ∘ C. This indicates the formation of pure magnesium ferrite.…”

Characterisation of sol–gel method synthesised MgZnFe 2 O 4 nanoparticles and its cytotoxic effects on breast cancer cell line, MDA MB‐231 in vitro

“…The second endothermic at 200°C and exothermic at 260°C with weight loss occurred from 130 to 260°C were ascribed to the decomposition of nitrates and to formation of a stable spinel Fe 2 O 4 , respectively [23, 24]. No further weight loss was found at temperatures above 400°C, indicating the availability of pure stable copper Fe 2 O 4 [25, 26].…”