Electric Dipole Ordering in the Alkali Cyanides KCN and NaCN: Short-Range Order Effects

摘要

The low temperature phases of the alkali cyanides KCN and NaCN are investigated. The Ising Model with incorporation of pair correlations (Bethe approximation) is used to calculate the temperature dependence of the dielectric constant. The parameters of the model are obtained by adjusting its theoretical predictions to experimental values. This parametrization is used to calculate the temperature dependence of the specific heat. The results are in good agreement with experimental data. (Atomindex citation 18:081273)