Existence of ferroelectric ice on planets-A neutron diffraction study

Hiroshi Fukazawa; Akinori Hoshikawa; Bryan C. Chakoumakos; Jaime A. Fernandez-Baca

doi:10.1016/j.nima.2008.11.044

Existence of ferroelectric ice on planets-A neutron diffraction study

Hiroshi Fukazawa, Akinori Hoshikawa, Bryan C. Chakoumakos, Jaime A. Fernandez-Baca

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

From neutron powder-diffraction experiments, we have studied the growth process of ferroelectric ice XI (eleven) with deuteron-ordered arrangements. We measured time-resolved neutron diffraction of 0.001-M KOD-doped D₂O ice. We observed the growth of ice XI at 72-74 K. The mass fraction f (the ratio of mass of ice XI to that of the doped ice) linearly increased with time for about 2 days. The de-transformed ice Ih, obtained after warming above the transition temperature of 76 K, retransformed to ice XI at 66 K. The observed increase of f with time is in good agreement with the nucleation process of the ordering and the constant growth of the ordered domain. A large fraction of ice Ih sample doped with sodium hydroxide changed to ice XI at 68 K. The results suggest that large quantities of ice on cold icy bodies in our solar system are able to transform to ice XI, which may be detectable by space telescope and planetary exploration.

Original language	English
Pages (from-to)	279-281
Number of pages	3
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	600
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2008.11.044
State	Published - Feb 21 2009

Funding

This work was supported by the JAEA President's Fund Program, a Grant-in-Aid for scientific research from the Japan Society for the Promotion of Science, and the JAEA-ORNL part of the US–Japan Cooperative Program on Neutron Scattering. We thank Chris Redmon for assistance with the neutron powder diffraction experiments at ORNL. This research was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy, under contract DE-AC05-00OR22725 with ORNL, managed and operated by UT-Battelle, LLC.

Funders	Funder number
Scientific User Facilities Division
U.S. Department of Energy	DE-AC05-00OR22725
Basic Energy Sciences
Oak Ridge National Laboratory
Japan Society for the Promotion of Science

Keywords

Crystal growth
Neutron diffraction
Planets and satellites
Water ice

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title = "Existence of ferroelectric ice on planets-A neutron diffraction study",

abstract = "From neutron powder-diffraction experiments, we have studied the growth process of ferroelectric ice XI (eleven) with deuteron-ordered arrangements. We measured time-resolved neutron diffraction of 0.001-M KOD-doped D2O ice. We observed the growth of ice XI at 72-74 K. The mass fraction f (the ratio of mass of ice XI to that of the doped ice) linearly increased with time for about 2 days. The de-transformed ice Ih, obtained after warming above the transition temperature of 76 K, retransformed to ice XI at 66 K. The observed increase of f with time is in good agreement with the nucleation process of the ordering and the constant growth of the ordered domain. A large fraction of ice Ih sample doped with sodium hydroxide changed to ice XI at 68 K. The results suggest that large quantities of ice on cold icy bodies in our solar system are able to transform to ice XI, which may be detectable by space telescope and planetary exploration.",

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Existence of ferroelectric ice on planets-A neutron diffraction study. / Fukazawa, Hiroshi; Hoshikawa, Akinori; Chakoumakos, Bryan C. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 600, No. 1, 21.02.2009, p. 279-281.

Research output: Contribution to journal › Article › peer-review

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T1 - Existence of ferroelectric ice on planets-A neutron diffraction study

AU - Fukazawa, Hiroshi

AU - Hoshikawa, Akinori

AU - Chakoumakos, Bryan C.

AU - Fernandez-Baca, Jaime A.

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N2 - From neutron powder-diffraction experiments, we have studied the growth process of ferroelectric ice XI (eleven) with deuteron-ordered arrangements. We measured time-resolved neutron diffraction of 0.001-M KOD-doped D2O ice. We observed the growth of ice XI at 72-74 K. The mass fraction f (the ratio of mass of ice XI to that of the doped ice) linearly increased with time for about 2 days. The de-transformed ice Ih, obtained after warming above the transition temperature of 76 K, retransformed to ice XI at 66 K. The observed increase of f with time is in good agreement with the nucleation process of the ordering and the constant growth of the ordered domain. A large fraction of ice Ih sample doped with sodium hydroxide changed to ice XI at 68 K. The results suggest that large quantities of ice on cold icy bodies in our solar system are able to transform to ice XI, which may be detectable by space telescope and planetary exploration.

AB - From neutron powder-diffraction experiments, we have studied the growth process of ferroelectric ice XI (eleven) with deuteron-ordered arrangements. We measured time-resolved neutron diffraction of 0.001-M KOD-doped D2O ice. We observed the growth of ice XI at 72-74 K. The mass fraction f (the ratio of mass of ice XI to that of the doped ice) linearly increased with time for about 2 days. The de-transformed ice Ih, obtained after warming above the transition temperature of 76 K, retransformed to ice XI at 66 K. The observed increase of f with time is in good agreement with the nucleation process of the ordering and the constant growth of the ordered domain. A large fraction of ice Ih sample doped with sodium hydroxide changed to ice XI at 68 K. The results suggest that large quantities of ice on cold icy bodies in our solar system are able to transform to ice XI, which may be detectable by space telescope and planetary exploration.

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Existence of ferroelectric ice on planets-A neutron diffraction study

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