Detection of Early Stage Precursor during Formation of Plastic Crystal Ethanol from the Supercooled Liquid State: A Simultaneous Dielectric Spectroscopy with Neutron Diffraction Study

作者:Sanz Alejandro*; Nogales Aurora; Puente Orench Ines; Jimenez Ruiz Monica; Ezquerra Tiberio A
来源:Physical Review Letters, 2011, 107(2): 025502.
DOI:10.1103/PhysRevLett.107.025502

摘要

Transformation of deuterated ethanol from supercooled liquid into a plastic crystal or rotator phase is investigated by means of a particular experimental setup combining simultaneously dielectric spectroscopy with neutron diffraction techniques. We demonstrate that, previous to the growth of the bcc lattice of the plastic crystal phase, the formation of a precursor or intermediate phase through a liquid-liquid phase separation takes place. Once this precursor phase is formed, subsequent (plastic) crystalline nucleation and growth is expected to develop.

  • 出版日期2011-7-6