A novel magneto-optic ferrofluid material for sensor applications

Abstract The paper presents the synthesis and characterization of a novel ferrofluid magneto-optic material. A quantity of 100 ml was manufactured using the charge stabilized method, which proved to be very inexpensive (£ 0.15 per ml) and with very high Verdet constant of 122.43 × 10 3  rad T −1  m −1 . As no linear birefringence was observed, this material is found to be particularly suitable for magneto-optic sensor applications where the presence of electric field is expected, such as detection of mains electrical current.

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