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Dielectric behaviour of a ferrofluid subjected to a uniform magnetic field

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2 Author(s)

The electric susceptibility of samples of ferrofluids subjected to a uniform magnetic field H was measured. The electric susceptibility \chi is dependent on the magnitude of the magnetic field and on the relative direction between the electric field E and the magnetic field H . 1) When E is perpendicular to H, frac{\partial \chi _{\perp }}{\partial H} < 0 2) When E is parallel to H, frac{\partial \chi _{parel\lel}}{\partial H} > 0 These results have been interpreted as a magneto-electric directive effect. A model is proposed, based on the assumption that the magnetic particles are roughly ellipsoidal and conducting grains.

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Magnetics, IEEE Transactions on  (Volume:16 ,  Issue: 2 )