CRYSTAL TO GLASS TRANSFORMATIONS IN SIMPLE SALT SYSTEMS

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Title: CRYSTAL TO GLASS TRANSFORMATIONS IN SIMPLE SALT SYSTEMS
Creators: Smyrl, Norman; Devlin, J. Paul
Issue Date: 1974
Publisher: Ohio State University
Abstract: It has been shown that the glass phase of many simple salts (nitrates, chlorates, etc.) can be formed by condensing the molten salt vapors at low $temperatures.^{1}$ Admission of proportionate quantities of water vapor during the $12^{\circ} K$ deposition of $MNO_{3}$ vapors permits formation of glassy solutions which crystallize at $\sim$ $170^{\circ} K$, forming a crystalline hydrate. The warming of the crystal hydrate in vacuo results in a loss of water at $\approx$ $230^{\circ} K$ with the formation of the anhydrous glass, which eventually crystallizes to the stable anhydrous salt at $\approx$ $240^{\circ} K$. Spectra that are representative of the phases involved, and which provide evidence for the unusual crystal-to-glass transformation will be discussed.
Description: $^{1}$G. Pollard, N. Smyrl, and J. P. Devlin, J. Phys. Chem. 76, 1826 (1972).
Author Institution: Department of Chemistry, Oklahoma State University
URI: http://hdl.handle.net/1811/16500
Other Identifiers: 1974-TH-6
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