✦ LIBER ✦

Various Growth Shapes of Na2S2O3 5H2O Crystals

✍ Scribed by T. Inoue; K. Mori; Y. Kageyama; H. Mori

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 445 KB
Volume: 35
Category: Article
ISSN: 0232-1300
DOI: 10.1002/1521-4079(200005)35:5<587::aid-crat587>3.0.co;2-a

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✦ Synopsis

The relation between the growth shapes and supersaturations and/or supercooloings 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.

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