Ice XII in its second regime of metastability

Details Ice XII in its second regime of metastability Ice XII in its second regime of metastability

2000-02-15

arxiv.org/abs/cond-mat/0002224v1

Physics

Condensed Matter

Statistical Mechanics

3 Pages of RevTeX, 3 tables, 3 figures (submitted to Physical Review Letters)

Scientific paper

We present neutron powder diffraction results which give unambiguous evidence for the formation of the recently identified new crystalline ice phase[Lobban et al.,Nature, 391, 268, (1998)], labeled ice XII, at completely different conditions. Ice XII is produced here by compressing hexagonal ice I_h at T = 77, 100, 140 and 160 K up to 1.8 GPa. It can be maintained at ambient pressure in the temperature range 1.5 < T < 135 K. High resolution diffraction is carried out at T = 1.5 K and ambient pressure on ice XII and accurate structural properties are obtained from Rietveld refinement. At T = 140 and 160 K additionally ice III/IX is formed. The increasing amount of ice III/IX with increasing temperature gives an upper limit of T ~ 150 K for the successful formation of ice XII with the presented procedure.

Affiliated with

Also associated with

No associations

Rating

Ice XII in its second regime of metastability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ice XII in its second regime of metastability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ice XII in its second regime of metastability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-612810