Thermal expansion of potassium iodide

Srinivasan, R. (1955) Thermal expansion of potassium iodide Proceedings of the Indian Academy of Sciences, Section A, 42 (5). pp. 255-260. ISSN 0370-0089

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The thermal expansion of two different specimens of potassium iodide was measured from liquid-air temperatures to 150°C. One specimen was melt grown in our laboratory and other was supplied by Harshaw Chemical Co. The expansion coefficient for the two specimens above room temperature are identical with one another. The high temperature expansion was not influenced by heat, or cold treatment of the specimens. Below 0°C. the thermal expansion of potassium iodide exhibits an anomalous behaviour. Two maxima at -95° and -40°C. and two minima at -60° and -25°C. have been observed. As the length of the specimen varies continuously with the temperature, the transition in this crystal appears to be homomorpous.

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Deposited On:11 Apr 2011 13:30
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