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Optical rotation in RbTiOAsO4 (point group mm2)
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UNSPECIFIED (2002) Optical rotation in RbTiOAsO4 (point group mm2). ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 217 (1). pp. 1-7. ISSN 0044-2968.
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Abstract
Measurement of optical rotation in RbTiOASO(4) (RTA) with the tiller method resulted in an optical rotation Of Q(12) = +17(3)degrees/mm at a wavelength of 670 nm, when a (100) sample was tilted about [001]. A tilt about [010] showed no rotation, as expected from the directional dependence of optical rotation calculated from the tensor in point group mm2. The absolute Miller-indices of the samples were found using X-ray anomalous scattering. The calculations with a dipole-dipole model show that the As5+-ions in RTA correlate with the main structural contribution of the optical rotation. However, there seems to be an even larger intrinsic contribution due to the Ti4+ - ions as a result of the distorted octahedral co-ordination with oxygen.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | ZEITSCHRIFT FUR KRISTALLOGRAPHIE | ||||
Publisher: | R OLDENBOURG VERLAG | ||||
ISSN: | 0044-2968 | ||||
Official Date: | 2002 | ||||
Dates: |
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Volume: | 217 | ||||
Number: | 1 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 1-7 | ||||
Publication Status: | Published |
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