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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References
Armington A F and O’Connor J J 1971Mater. Res. Bull. 7 613
Blank Z 1974J. Cryst. Growth 26 215
Brezina B and Havrankova M 1976J. Cryst. Growth 34 248
Henisch H K, Dennis J and Hanoka J I 1965J. Phys. Chem. Solids 26 493
Henisch H K 1973Crystal growth in gels (Pennsylvania: State University Press)
Huber W, Arend H and Kahr G 1974Mater. Res. Bull. 9 1573
Nancollas Gr H and Rurdie N 1963Trans. Faraday Soc. 59 735
Nielsen A E 1964Kinetics of precipitation (London: Pergamon press)
Oxley J H 1966Vapour deposition (ed.) C F Powell, J H Oxley and J M Blocher (New York: John Wiley) p. 102
Patel A R and Arora S K 1973J. Cryst. Growth 18 175
Patel A R and Venkateswara Rao A 1977J. Cryst. Growth 38 288
Patel R and Venkateswara Rao A 1978J. Cryst. Growth 43 351
Patel A R and Venkateswara Rao A 1980J. Cryst. Growth 49 589
Patel A R and Venkateswara Rao A 1981Krist. Tech. 16 1007
Shripathi T, Bhat H L and Narayanan P S 1980J. Mater. Sci. 15 3095
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Rao, A.V. Growth of larger and more perfect single crystals of KClO4 in silica gel. Bull. Mater. Sci. 7, 83–90 (1985). https://doi.org/10.1007/BF02744413
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DOI: https://doi.org/10.1007/BF02744413