Are dipolar liquids ferroelectric?


VH and HV depolarized hyper-Rayleigh scattering spectra were measured for liquid solutions of dipolar CH3CN in nondipolar C2Cl4 at T=300 K. The VH spectrum contains a strong narrow peak due to a slowly relaxing longitudinal orientation mode. This peak is absent in the HV spectrum, and it disappears from the VH spectrum when the CH3CN concentration is reduced to 8%. This observation is consistent with a ferroelectric phase transition predicted to occur when rho mu0(2)=9epsilon0kT=49 D2 M.

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@article{Shelton2005AreDL, title={Are dipolar liquids ferroelectric?}, author={David P Shelton}, journal={The Journal of chemical physics}, year={2005}, volume={123 8}, pages={084502} }