Electric Dipole Moments of Magnetite Colloidal Particles
in Liquid Dielectrics

K. V. Erin

Stavropol State University, ul. Pushkina 1, Stavropol, 355009 Russia

Received February 9, 2007

Abstract—The effects of alternating and pulsed fields on the electric birefringence in a colloided system of
magnetite particles suspended in kerosene are studied. The permanent dipole moment is found to substantially
influence the orientation of magnetite particles in alternating fields with frequencies of higher than 15 Hz. The
mechanism for the generation of the permanent dipole moments in magnetite colloidal particles suspended in
low-conductivity liquids is discussed.

DOI: 10.1134/S1061933X07060051

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