Viscosity, resistivity and surface tension measurements of Fe3O4 ferrofluid

Electrical resistivity of magnetic fluids

“…Equations (10) and (11) can be used to estimate η 0 from electrical measurements and further more we conclude that source of electric conduction does not originate from ion trapping as mentioned in Ref. [13], but is due to electron hopping through chains or partially due to uncoated Fe 3 O 4 particles and electrophoreses, which is due to the polarizing tails attached to the magnetic particles forming these chains.…”

“…Dababneh et al [13] measurements of the relative resistivity of Fe 3 O 4 magnetic fluids for 0.00526 < ε < 0.0526 and their results showed that the relative resistivity is inversely proportional to the concentration of magnetic particles. Although the magnetic, magneto-optical, rheological properties of MFs have been studied extensively using different techniques [1][2][3][12][13][14].…”

“…Although the magnetic, magneto-optical, rheological properties of MFs have been studied extensively using different techniques [1][2][3][12][13][14]. the electrical behavior of MFs have been reported to a much lesser extent.…”

Evaluation of magnetic nanoparticles coated by oleic acid applied to solvent extraction processes

“…8B), it was observed that the lost iron percentage is greater in the less concentrated ferrofluid. Such behavior is possibly related to the change on physical properties of the fluids due to the presence of the magnetic nanoparticles in the organic phase, as is the case of density, surface tension and viscosity [21,22], which may affect the immiscibility between phases and the mobility of the particles.…”

“…Consequently, the immiscibility of the fluids is increased, and thus resulting in an easier and faster separation, even in the absence of a magnetic field [21,22].…”