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Poisson Ratio and Covalency - Ionicity



H M. Ledbetter, Sung Kim


For twenty-one 8-N (octet) compounds, we consider the dependence of the Poisson ratio upsilion} on fractional covalent-ionic character estimated from atomic electronegativites. Compounds with ionicity approaching 1.0 show Poisson ratios near the upper bound: υ = 0.5. Increasing covalency moves υ toward zero, the effective lower bound. Especially, we focus on tetrahedral semiconductors where ionicity rannges from 0 to 0.6. We find that the Poisson ratio increases with increasing ionicity.
Poisson Ratio and Covalency - Ionicity
Publisher Info
Handbook of Elastic Properties of Solids, Fluids, and Gases ,


constants, covalency, elastic, ionicity, Poisson ratio, semiconductors


Ledbetter, H. and Kim, S. (2008), Poisson Ratio and Covalency - Ionicity, Handbook of Elastic Properties of Solids, Fluids, and Gases , (Accessed June 13, 2024)


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Created October 16, 2008