Growth and study of barium oxalate single crystals in agar gel

Abstract

Barium oxalate was grown in agar gel at ambient temperature. The effect of various parameters like gel concentration, gel setting time and concentration of the reactants on the growth of these crystals was studied. Prismatic platy shaped spherulites and dendrites were obtained. The grown crystals were characterized by X-ray powder diffractometry, infrared spectroscopy, thermogravimetric and differential thermal analysis. An attempt is made to explain the spherulitic growth mechanism.

Growth of barium oxalate crystals in agar–agar gel and their characterization

“…However Dhrama Praksh and Mohanrao [12] have obtained periodic crystallization of barium oxalate in silica hydro gel with Liesegang ring formation. Recently we published detail study on growth and study of barium oxalate single crystals [25]. The present paper deals with the growth of barium oxalate in agar-agar gel by single and double diffusion techniques, where the results obtained are different.…”

Thermoelectric Power Measurement of Gel Grown Strontium Oxalate Crystals

“…Simple, inexpensive and suitable gel method [18][19][20] was used to grow strontium oxalate crystals at ambient temperature [21]. These gel grown strontium oxalate crystals were then used for the thermoelectric power studies.…”

Etching and Micro-Topographical Studies of Barium Oxalate Crystals Grown in Agar Gel

“…An attempt to understand the mechanism of etching can be made by choosing number of simple etchants. AR grade HCl, HNO 3 …”

“…The agar gel technique is an inexpensive and simple for growing single crystals of certain class of materials like alkaline earth metal oxalates [3]. Oxalate crystals are insoluble in water and decompose before melting [4].…”