International Journal of Materials Chemistry and Physics
Articles Information
International Journal of Materials Chemistry and Physics, Vol.1, No.2, Oct. 2015, Pub. Date: Aug. 23, 2015
Fe3O4 Ferrofluid Nanoparticles: Synthesis and Rheological Behavior
Pages: 141-145 Views: 2990 Downloads: 1731
[01] Jyoti Dhumal, Department of Electronics, DBF Dayanand College of Arts & Science, Solapur, Maharashtra, India.
[02] Sushilkumar Bandgar, Department of Electronics, DBF Dayanand College of Arts & Science, Solapur, Maharashtra, India.
[03] Kisan Zipare, Department of Electronics, DBF Dayanand College of Arts & Science, Solapur, Maharashtra, India.
[04] Guruling Shahane, Department of Electronics, DBF Dayanand College of Arts & Science, Solapur, Maharashtra, India.
Nanocrystalline Fe3O4 particles of controlled size were synthesized by a facile chemical co-precipitation method. The X-ray diffraction patterns confirm the synthesis of single crystalline phase of Fe3O4 nanoparticles with lattice parameter 8.4090 Å. The average particle size of as-synthesized sample is 11.5 nm. A TEM analysis show that the sample contains well dispersed nanoparticles of almost spherical in shape with average particle size is of the order of 10-20 nm. The magnetic measurements show superparamagnetic nature of the sample. The saturation magnetization is 63emu/g. The rheological study of oleic acid coated Fe3O4 ferrofluid show magneto-viscous effect. In the absence of the magnetic field, the ferrofluids behave essentially as a Newtonian fluid having a rate-insensitive viscosity whereas increase in the magnetic field leads to strong changes in the viscosity. This can be attributed to the formation of chain-like clusters due to strong inter-particle interaction in the presence of a magnetic field.
Fe3O4 Nanoparticles, Structural Characterization, Magnetic Properties, Ferrofluid
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