“…It should be noted that a long-chain model of the magnetodielectric effect developed by Xu Pei-Ying et al 35 has been applied by Kopcansky and coworkers to describe the effect observed in magnetite-based ferrouids. 27,28 This model seems to work well for ferrouids with small concentrations of magnetic particles, so that distances between the magnetic particles are much higher than the particles' size and their interactions can be described in terms of point-like dipoles. In our case the magnetic ller concentration within elastomers is close to percolation and the model of point-like dipoles cannot be applied.…”