Crystal Research and Technology
Cryst. Res. Technol. 34 (1999) 873 - Abstract -

S. Selvasekarapandian, K. Vivekanandan, P. Kolandaivel

Department of Physics, Bharathiar University, Coimbatore - 641 046, India

Vibrational Studies of Gel Grown Ferroelectric RbHC4H4O6 and SrC4H4O6 4H2O Crystals

Single crystals of Rubidium Hydrogen Tartrate (RbHT) and Strontium Tartrate Tetrahydrate (SrTT) have been grown by a gel technique using a chemical reaction method. A controlled reaction has been employed between tartaric acid and feed solution (RbCl for RbHT and Sr(NO3)2) at room temperature. The laser Raman and FT-IR spectra of these crystals are recorded in the frequency range 100 - 4000 cm-1. The presence of tartrate ion, monohydrogen tartrate ion, water molecules and external mode vibrational frequencies are identified and discused. The doublet and broad nature of tartrate ion vibrational frequencies have also been observed and analysed.

Keywords: Raman spectra, FT-IR spectra, ferroelectric crystals, gel growth


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