A Novel Approach to Dispersion and Stabilization of Water Based  Ferrofluid Fe3O4

Author(s)	Ms.K.B.Dharani, Ms.T.Mahalakshmi, Dr.M.Geetha
Country	India
Abstract	A new method to prepare water based Fe3O4 ferrofluid with high stabilization has been reported in this paper. Oleic acid/ polyethylene glycol 4000 (PEG 4000)/agar/oleic acid have been used as surfactants and added to the fluid one after another. X-ray diffraction (XRD, Fourier Transform Infrared Spectroscopy (FTIR) method, spectra and thermogravimetric analysis (TGA) & Quincke’s method for magnetic stabilization have been used to characterize the structure, component and morphology of magnetic nanoparticles, respectively.We have observed the microstructure of chain-like (or stick-like) structure under applied magnetic field, which consists of several nanoparticles in the width direction and hundreds of nanoparticles in the length direction. The result shows that the magnetic nanoparticles have high saturation magnetization and the ferrofluid has high stability under magnetic conditions.
Keywords	Ferrofluid, Super Paramagnetic nanoparticle, Water based Fe3O4.
Field	Physics
Published In	Volume 16, Issue 2, April-June 2025
Published On	2025-06-09
DOI	https://doi.org/10.71097/IJSAT.v16.i2.6114
Short DOI	https://doi.org/g9pz8h

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