Supercooled halide solutions

The structural information at an atomic level is essential for understanding the various properties of supercooled and glassy solutions. X-ray and neutron diffraction enables us to obtain direct structure information (bond distance and coordination number) of ionic solutions in terms of the radial distribution function. In the case of aqueous lithium halide solutions. X-ray diffraction data are dominated by halide-oxygen, halide-oxygen, and oxygen-oxygen interactions. On the contrary, neutron isotopic substitution... 

The monoclinic phase of PE has also been obtained under different growth conditions, in the absence of mechanical stress. Teare and Holmes [15] suggested that it can be produced by crystallization at low temperatures. Keller and coworkers [17] found traces of this phase in germ-free PE droplets crystallized at very high supercooling, which is indeed known to induce unstable crystal forms in many systems. In [18-20] it was reported that epitaxial crystallization of PE from dilute solutions on alkali halide substrates may give rise to the monoclinic phase that transforms to the orthorhombic phase. Transformation takes place within a few nanometers from the substrate surface, and growth proceeds thereafter in the orthorhombic phase. 

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