Irregular Fractal-Like Crystal Growth of Ammonium Chloride

Haruo Honjo, Shonosuke Ohta, Mitsugu Matsushita

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


Irregular dendritic crystals of ammonium chloride (NH4C1) are grown two-dimensionally between two parallel glasses, one of which has rough surface. The pattern clearly reminds us of those of Witten-Sander diffusion-limited aggregation (DLA) model. The radius of gyration is measured to give the fractal dimension df=1.671 ±0.002, which is in good agreement with two-dimensional DLA. Our result implies that any random perturbations strong enough to overcome crystalline anisotropy always give rise to random DLA-like crystals, instead of otherwise regular dendritic crystals.

Original languageEnglish
Pages (from-to)2487-2490
Number of pages4
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - Aug 1986
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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