Growth and optical activity of Ca3NbGa3Si2O14 single crystal
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Crystals of Ca3NbGa3Si2O14 (CNGS) with ordered langasite structure were grown using the Czochralski method along the Cartesian X axis . The as-grown crystals exhibit high optical quality and structure perfection. Optical activities were obtained by measuring polarised transmission at various wavelengths between crossed polarisers using a TU-1900 spectrophotometer and we found that CNGS crystals showed very large values of ϱ.
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