Kerr effect anomalous

The anomalous Kerr effect near the isotropic-nematic transition can be qualitatively understood as follows. Approaching the I-N transition nematiclike aggregates form, and the sizes of the aggregates increase close to the transition. The growth of the Kerr constant can be calculated by taking into account the contribution of nematic aggregates to the orientation order parameter to the dielectric properties of the isotropic phase. This contribution was calculated in the frame of the Landau theory. Accordingly, the field induced orientation order is i... 

Fig. 58. Anomalous hysteresis loops in a single-layer TbFe film having a compositional gradient, measured by the Hall effect (top) and the Kerr magneto-optical effect (bottom). (After Chen and...

Argyle et al. (1975) have determined the total magnetization and Co sublattice magnetization dependence on temperature from Kerr rotation measurements, for alloys prepared by rf sputtering. They observed anomalous polarization Kerr loops due to interface effects relative to the Gd oxidation at the surface. They concluded that the formation of a Gd203 layer results in an enrichment of Co in the top (film-air interface) with a thickness of 50-100 A. In order to have a... 

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