| Abstract: | The specific rotation ρ of strontium tantalum gallium silicate Sr3TaGa3Si2O14 (STGS) piezoelectric single crystal was determined from 350 to 850 nm by measuring the optical transmission between parallel polarisers in Z direction. It is shown that Sr3TaGa3Si2O14 has quite large a value of ρ which is a little smaller than that of strontium niobium gallium silicate Sr3NbGa3Si2O14 (SNGS). The crystal with ordered structure which is isostructural to calcium gallium germanate Ca3Ga2Ge4O14 (CGG) was grown by Czochraiski technique. And its birefringence was also determined. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
