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- Title
Crystal Structure and Optical Activity of La[sub 3]Nb[sub 0.5]Ga[sub 5.5]O[sub 14] and Sr[sub 3]Ga[sub 2]Ge[sub 4]O[sub 14] Single Crystals of the Langasite Family.
- Authors
Molchanov, V. N.; Maksimov, B. A.; Kondakov, A. F.; Chernaya, T. S.; Pisarevskiı, Yu. V.; Simonov, V. I.
- Abstract
Precision X-ray structural studies of the La[sub 3]Nb[sub 0.5]Ga[sub 5.5]O[sub 14] and Sr[sub 3]Ga[sub 2]Ge[sub 4]O[sub 14] single crystals were carried out. The space group P321 was confirmed. The anomalous X-ray scattering was taken into account to establish the absolute structures (chirality) of the crystals; they proved to be of different sign. The structural features responsible for the optical activity of crystals were revealed, and the dependence of the magnitude and sign of specific rotation on the structural parameters of these compounds were determined. © 2001 MAIK “Nauka / Interperiodica”.
- Subjects
MOLECULAR crystals; CRYSTAL optics
- Publication
JETP Letters, 2001, Vol 74, Issue 4, p222
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1413557