Physics
Scientific paper
Aug 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3816101a&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 16, CiteID L16101
Physics
1
Mineralogy And Petrology: Mineral And Crystal Chemistry (1042), Mineral Physics: X-Ray, Neutron, And Electron Spectroscopy And Diffraction, Planetary Sciences: Comets And Small Bodies: Impact Phenomena (5420, 8136)
Scientific paper
The existence of ferroelectric ice XI with ordered hydrogen in space becomes of interest in astronomy and physical chemistry because of the strong electrostatic force. However, the influence was believed to be limited because it forms in a narrow temperature range. From neutron diffraction experiments, we found that small hydrogen-ordered domains exist at significantly higher temperature and the domains induce the growth of “bulk” ice XI. The small ordered domain is named “memory” of hydrogen ordered ice because it is the residual structure of ice XI. Since the memory exists up to at least 111 K, most of ices in the solar system are hydrogen ordered and may have ferroelectricity. The small hydrogen-ordered domains govern the cosmochemical properties of ice and evolution of icy grains in the universe.
Arakawa Masashi
Chakoumakos Bryan C.
Fernandez-Baca Jaime A.
Fukazawa Hiroshi
Kagi Hiroyuki
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