S.Haussühl, W.Effgen: Faraday effect in cubic crystals. Z.Kristallogr. 183 (1988) 153-174.

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The Verdet constants of 176 cubic crystals of different chemical composition have been determined for a wavelength of 633nm. From these values the specific Faraday rotations could be derived for 63 elements, some of them in different ionic states states. Due to the quasi-additivity rule the Verdet constant of any other cubic crystal containing those elements can be predicted with a high reliability. The quasi-additivity rule has been found to be valid also for the Faraday rotations along the optical axis in 15 optically uniaxial crystals and one biaxial crystal. However, certain deviations from the additivity rule occur indicating a distinct influence of bonding and coordination properties. Further, the temperature dependence of the specific Faraday rotations have been evaluated from measurements between 220K and 310K. Crystals, which undergo a phase transition in that region, exhibit strong anomalies of their Faraday rotation. The features of these anomalies, 17 examples of which are presented here, are characteristic for the symmetry variation, induced birefringence, and domain formation. Hitherto unknown phase transitions have been found in H3PW12O40*30H2O, Nd(Cl)4)3*3H2O, Pr(ClO4)3*3H2O, and AgClO4*3p-dioxane.


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