, Volume 78, Issue 4, pp 561-563
Date: 19 Dec 2003

Growth and optical activity of Ca3NbGa3Si2O14 single crystal

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Abstract

Crystals of Ca3NbGa3Si2O14 (CNGS) with ordered langasite structure were grown using the Czochralski method along the Cartesian X axis [110]. 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.

PACS

81.10.-h; 42.79.Ci; 78.20.Ek