Abstract
The ability of a solid substrate to induce ice nucleation in supercooled water depends on a number of factors. There is a tendency for the more effective nucleant to possess hexagonal crystalline symmetry and lattice parameters reasonably close to those of ice. The present study was undertaken in an effort to decrease the mismatch between ice and lead iodide and thereby improve the nucleating behaviour of lead iodide. For this purpose lead iodide has been considered. Pbl2 and Cdl2 were added in different molar ratios and fused at 430° C. An X-ray diffractogram of each combination was taken, and an ice nucleation study was made with finely powdered samples of each combination The nucleation temperature at 50:50% combination of Pbl2 and Cdl2 has the highest nucleation temperature of −2.35° C. Other combinations have also revealed nucleation temperatures higher than that of pure Pbl2 and Cdl2. The causes for the activity have been discussed.
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Gobinathan, R., Ramasamy, P. Ice nucleation activity of Pbl2-Cdl2 system. J Mater Sci 20, 585–589 (1985). https://doi.org/10.1007/BF01026529
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DOI: https://doi.org/10.1007/BF01026529