Abstract
As part of a continuing effort on crystal growth in gels, this paper describes the growth of large transparent single crystals of KClO4 by the improved design. The effect of various anionic and cationic components on nucleation, growth and quality of these crystals has been studied. It has been found that a combination of KNO3 and HClO4 as the reactants resulted in the best crystals in terms of crystal size, quality and inter-crystalline separation. The effect of various impurities on nucleation, growth and quality of these crystals has been studied. It has been found that the impurities which enhance the solubility of KClO4 have a positive effect on the size and quality of the crystals. A new etchant, consisting of concentrated HCl and H2SO4 in the volume ratio 2:3 has been found to reveal as-grown as well as freshly introduced dislocations.
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