Evolution of disorder in Zn(CN)2 at high pressure |
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Authors: | N V Chandra Shekar T R Ravindran P Ch Sahu and A K Arora |
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Institution: | (1) Department of Chemistry, McGill University, 801 Sherbrooke St., West, Montreal, QC, H3A 2K6, Canada; |
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Abstract: | Zinc cyanide is an interesting negative thermal expansion (NTE) material exhibiting cubic structure at ambient pressure and
temperature. We have investigated the structural stability of zinc cyanide under high pressure up to 5.2 GPa by performing
X-ray powder diffraction in a diamond anvil cell. Under very low pressure of about 0.6 GPa, the diffraction peaks drastically
reduce in intensity, indicating possible onset of disorder in the structure. In this paper, its high pressure structural and
compressibility behaviour, bulk modulus and the pressure derivative of bulk modulus are reported. |
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