Different scattering techniques dynamic light scattering (DLS), small-angle X-ray scattering (SAXS) and
small-angle neutron scattering (SANS) have been used to characterize a water-based surfactant stabilized ferrofluid
having ferrite (F~04) particles coated with oleic acid. DLS gives the overall size of the particle along with the
thickness of the surfactant (oleic acid) coating and water of hydration attached to the particle. SAXS only measures
the size of the ferrite particle due to poor contrast of surfactant coating for X-rays. SANS with the possibility to vary
the contrast provides both the size of the ferrite particle and the thickness of the surfactant coating on the particle.
Keywords: Ferrofluid, dynamic light scattering, small-angle scatteringV.K. Aswall, s. N. Chodankarl, P.U. Sastryl, P.A. Hassan2 and R.V. Upadhyal
1Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
2Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
3Department of Physics, Bhavnagar University, Bhavnagar 364 002, India
small-angle neutron scattering (SANS) have been used to characterize a water-based surfactant stabilized ferrofluid
having ferrite (F~04) particles coated with oleic acid. DLS gives the overall size of the particle along with the
thickness of the surfactant (oleic acid) coating and water of hydration attached to the particle. SAXS only measures
the size of the ferrite particle due to poor contrast of surfactant coating for X-rays. SANS with the possibility to vary
the contrast provides both the size of the ferrite particle and the thickness of the surfactant coating on the particle.
Keywords: Ferrofluid, dynamic light scattering, small-angle scatteringV.K. Aswall, s. N. Chodankarl, P.U. Sastryl, P.A. Hassan2 and R.V. Upadhyal
1Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
2Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
3Department of Physics, Bhavnagar University, Bhavnagar 364 002, India
