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Magnetization curves of ferrofluids with different particle volume fractions .
The magnetization reduced by vs applied magnetic field for the ferrofluids. The dashed line is the magnetization curve of the particle.
Schematic illustration of the field-induced structural force between large particles in the bidisperse model. Note depletion of small particles from space separating large particles with the decreasing distance between the large particles, and the increasing total magnetic moment of the particle ensemble with the applied magnetic field.
The initial magnetic susceptibilities for the ferrofluids and the treated particles.
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