Schematic presentation of the BaHF particles’ geometry (a) and their orientation due to magnetic attraction (b) with the cross section of a BaHF particle covered with a surfactant layer (c).
Energy of interaction between the BaHF particles with respect to the separation distance , particles’ radii , and thickness-to-radius ratio (denoted in the legend). and denote van der Waals (broken line) and magnetic (full line) energies, respectively.
The steric energy required for the stabilization of the BaHF particles with respect to their radii (a) and to their thickness-to-radius ratio (denoted in the legend). An enlargement is shown at the bottom (b).
TEM image of the studied BaHF powder (a) with the particle-size distribution (b).
Magnetic hysteresis of the studied BaHF particles (a) and the corresponding XRD pattern (b). Here H denotes the hematite and the unmarked peaks all correspond to the BaHF.
TEM image of the studied BaHF particles from the suspension. * indicates some of the dispersed particles.
Zeta-potential of the studied BaHF particles in water.
Results from thermal and MS analyses.
Thickness of the nonmagnetic layer and the steric energy required for the stabilization of the different size fractions of the studied BaHF powder.
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