Preparation and characterization of carbonyl iron/strontium hexaferrite magnetorheological fluids

- Carbonyl iron/strontium hexaferrite (SrFe12O19) magnetorheological fluids (MRFs) were prepared.
- Stability of carbonyl iron-based MRFs was improved remarkably by adding SrFe12O19 nanoparticles.
- MRF's shear stress could be predicted using improved Herschel-Bulkley model.
- A theoretical model was proposed to predict MRF's yield stress under an applied magnetic field.