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Study of the oriented overgrowth of sodium nitrate crystals
Author(s) -
Anuradha P.,
Bhagavan Raju I. V. K.
Publication year - 1985
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170200615
Subject(s) - supersaturation , calcite , mica , evaporation , substrate (aquarium) , chemical engineering , sodium , polystyrene , solvent , sodium nitrate , chemistry , hexagonal crystal system , mineralogy , materials science , morphology (biology) , gypsum , inorganic chemistry , crystallography , organic chemistry , metallurgy , geology , physics , oceanography , engineering , thermodynamics , polymer , paleontology
Formation of overgrowths of NaNO 3 on crystalline and noncrystalline substrates has been investigated employing the solvent evaporation method. Calcite, Gypsum, Sodium chloride, Mica, Glass and Polystyrene films formed on glass have been employed as substrate materials. The solvents employed are water, liquid ammonia, methyl alcohol and n‐butyl alcohol. Random orientation of the overgrowths is observed on the substrates except in the case of calcite and mica. It is found that the morphology of the overgrowths manifests in the form of rhombic‐, triangular‐ and hexagonal platelets. The occurrence of (001), (110) and (111) twins is observed. The effect of supersaturation and nature of the substrate on the formation of overgrowths is considered.