On growth and morphological studies of TGS single crystals

Abstract

The effect of various growth parameters; seed morphology, growth-temperature and pH of the mother solution on the growth of TGS single crystals is studied. The effect of these variables on the crystal morphology and perfection is reported. It is shown that: (i) The crystal quality is much dependent on the seed and the growth temperature and (ii) the pH-control is a simple and an effective method for obtaining TGS crystals of required morphology.

Growth and properties of triglycine sulfate (TGS) crystals: Review

“…43 The change in the morphology was not substantial, but the rate of growth in different directions changed with the temperature, and relative change in the size of the faces was observed. Extra nuclei hindered the growth at higher temperature (40°C), and the crystals were of poor quality with low transparency.…”

“…43 The influence of growth solution p H on growth rates of various faces {(OOl), (OlO), (100)) and habit of TGS was studied by Tsedrik er ~2 1 .~~ At a pH < 1, diglycine sulfate (DGS) was formed. Table I11 gives the values of average growth rate V of (OOl), (010) and (100) faces of TGS crystals vs. pH of the solution as well as DGS grown at pH 0.3.…”

Deformation study of anhydrous diglycine sulphate crystal

“…In the high temperature experiments, slip is activated only around 90 ° C and above in static indentation. To reveal the slip, the dislocation etchant consisting of dichloroacetic acid was used (Pandya and Vyas 1981). Figure 1 shows a part of the etch-pit rosette around the indentation mark and there are two prominent rosette wings indicating two distinct slip systems.…”