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15 March 2001 Optical activity and circular dichroism in the sillenite crystals
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Proceedings Volume 4358, Optics of Crystals; (2001)
Event: Optics of Crystals, 2000, Mozyr, Belarus
Optical absorption, power rotary and circular dichroism of crystals of the sillenite family Bi12MxI20(M- elements I-VIII of groups or their combination) were measured. The t1-2e charge transfer transition of the [VO4]3- tetrahedral complexes is found to make a negative contribution to the optical rotation of the vanadium sillenite. We present a model, which takes into account a negative contribution from the charge-transfer transitions of [MO4]n- complexes to the optical rotation in Bi12MxO20 crystals. It was found that M vacancies and crystal field transitions of 3d- elements contribute significantly to the circular dichroism of sillenite crystals.
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Vladimir I. Burkov, Yuri F. Kargin, and Anna V. Egorysheva "Optical activity and circular dichroism in the sillenite crystals", Proc. SPIE 4358, Optics of Crystals, (15 March 2001);

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