Abstract
Based on specific heat, x-ray diffraction and nonlinear dielectric effect (NDE) measurementsthe evidence for a liquid–liquid (L–L) transition in trans-1,2-dichloroethylene atTL−L≈Tm+23.6 K≈247 K is shown. The strong pre-transitional anomaly of NDE, similar to the one observed in theisotropic phase of nematic liquid crystals, makes it possible to estimate the weaklydiscontinuous character of the transition. Based on NDE measurements, the pressureevolution of the L–L transition up to almost 500 MPa was also obtained. Parameterizationby the modified Simon–Glatzel-type equation made possible an insight into the negativepressure domain.
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