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Various Growth Shapes of Na 2 S 2 O 3 5H 2 O Crystals
Author(s) -
Inoue T.,
Mori K.,
Kageyama Y.,
Mori H.
Publication year - 2000
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 - 10.1002/1521-4079(200005)35:5<587::aid-crat587>3.0.co;2-a
Subject(s) - platy , supersaturation , supercooling , materials science , spherulite (polymer physics) , hexagonal crystal system , ice crystals , crystal growth , crystallography , crystal habit , mineralogy , composite material , optics , chemical engineering , crystallization , chemistry , thermodynamics , organic chemistry , polymer , engineering , physics
The relation between the growth shapes and supersaturations and/or supercoolings was investigated in the Na 2 S 2 O 3 5H 2 O crystals: (i) The growth shapes changed from a hexagonal prismatic crystal, aggregate of platy crystals and to a spherulite with an increase of supersaturations and/or supercooloings. (ii) The deposition rate suddenly increased at a certain supersaturation and/or supercooling, where the growth shape changed from the hexagonal prism to the aggregate of platy crystals. (iii) The deposition rates of spherulites become higher with increasing the solute concentrations. (iv) The formation process of the spherulites were in situ observed by the Schlieren and/or Mach‐zehnder interferometer methods.