Polyamorphism, ie the presence of more than one amorphous state, was observed for the
first time in amorphous ice or glassy water. In addition to LDA (low-density amorphous ice), a …

Pressure-induced amorphization (PIA) is a phenomenon that involves an abrupt transition
between a crystalline material and an amorphous solid through application of pressure at …

Many acronyms are used in the literature for describing different kinds of amorphous ice,
mainly because many different preparation routes and many different sample histories need …

The well-known expansion of water on cooling below 277 K is one of several peculiar
properties that could signal a second critical point near 220 K and 0.1 GPa in pressure, deep …

We investigate the downstroke transition from high-(HDA) to low-density amorphous ice
(LDA) at 140 (H2O) and 143 K (D2O). The visual observation of sudden phase separation at …

The structure factor and oxygen–oxygen pair-distribution functions of amorphous ices at
liquid nitrogen temperature (T= 77 K) have been derived from wide-angle X-ray scattering …

When amorphous materials are compressed their structures are expected to change in
response to densification. In some cases, the changes in amorphous structure can be …

We present a neutron diffraction study of the transition between low-density and high-density
amorphous ice (LDA and HDA, respectively) under pressure at∼ 0.3 GP a, at 130 K. All the …

This paper summarizes the scientific trends associated with the rapid development of the
technique of high‐energy X‐ray diffraction over the past decade pertaining to the field of …

Polymorphism of water has been extensively studied, but controversy still exists over the
phase transition between high-density amorphous (HDA) and low-density amorphous (LDA) …