  Investigation of magnetooptical characteristics of ferrofluids is an
important task aimed at the development of novel optoelectronic systems. This
article reports on the results obtained in the experimental studies of the
factors that affect the intensity and spatial distribution of the laser
radiation scattered by magnetic particles and their agglomerates in a magnetic
field. Laser correlation spectroscopy and direct measurements of laser
radiation scattering for studies of the interactions and magnetooptical
properties of magnetic particles in solutions were employed. The objects were
samples of nanodispersed magnetite (Fe3O4) suspended in kerosene and in water.
Our studies revealed some new behavior of magnetic particles in external
magnetic and light fields, which make ferrofluids promising candidates for
optical devices.
