DOI: 10.1063/1.1723683. Solid Solutions of the Alkali Halides

10.1063/1.1723683

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

X-ray studies of solid solutions of alkali halide pairs with a common ion at room temperature and at 550°C show that these pairs can be divided into three groups depending on the percent deviation δ of their lattice parameters. For values of δ less than 6 percent miscibility is complete at room temperature. For values of δ between 6 and 13 percent miscibility is complete at 550°C. For values of δ larger than about 13 percent miscibility is not complete at 550°C. In terms of the Born theory of ionic lattices, the free energy of mixing, and Vegard's law, an approximate theory for the phase curve of these solid solutions is derived. For a typical alkali halide with an electrostatic energy of 180 kcal. at the absolute zero of temperature the equation of the phase curve is 9δ2/T(1–2x)+ln x−ln (1−x)=0,where x is the mole fraction of one component dissolved in the other. The temperature above which miscibility is complete is given by T=4.5δ2. The heat of mixing is approximately −9δ2 cal. The predictions of this theory are in good agreement with the above-mentioned experimental observations.

Bibliography

Tobolsky, A. V. (1942). Solid Solutions of the Alkali Halides. The Journal of Chemical Physics, 10(3), 187â192.

Authors 1

Arthur V. Tobolsky (first)

References 7 Referenced 44

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10.1021/ja01857a061 / J. Am. Chem. Soc. (1941)
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Dates

Type	When
Created	20 years, 7 months ago (Jan. 5, 2005, 7:04 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 7:26 a.m.)
Indexed	1 month ago (July 30, 2025, 10:48 a.m.)
Issued	83 years, 5 months ago (March 1, 1942)
Published	83 years, 5 months ago (March 1, 1942)
Published Print	83 years, 5 months ago (March 1, 1942)

Funders 0

None

BibTeX

@article{Tobolsky_1942, title={Solid Solutions of the Alkali Halides}, volume={10}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1723683}, DOI={10.1063/1.1723683}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Tobolsky, Arthur V.}, year={1942}, month=mar, pages={187–192} }

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