Abstract: Large corrections to the x-ray intensities of the standard powder diffraction pattern of hexagonal AgI are proposed. Based on these intensities, it appears that some precipitates which have been described in the literature as pure hexagonal have actually contained about 30% of the cubic phase. Hexagonal AgI was produced during precipitation only by slow crystallization and without an excess of either ${\mathrm{Ag}}^{+}$ or ${\mathrm{I}}^{\ensuremath{-}}$. Faster precipitations gave mixtures of the cubic and hexagonal phases, and crystals whose ...
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Topics: 
Crystallography
Condensed matter physics
Optics