High-pressure phase transformations of fluorite-type dioxides

Details High-pressure phase transformations of fluorite-type dioxides High-pressure phase transformations of fluorite-type dioxides

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980e%26psl..49..166l&link_type=abstract

Earth and Planetary Science Letters, vol. 49, no. 1, Aug. 1980, p. 166-172.

Computer Science

12

Dioxides, Fluorite, Metal Oxides, Phase Transformations, Planetary Composition, Cations, High Pressure, Laser Heating, X Ray Diffraction

Scientific paper

Phase transformations were investigated in six fluorite-type dioxides using a diamond anvil press together with laser heating. It was shown that the post-fluorite phase transformations form a small group which includes HfO2, ZrO2 and 'TbO2' which changes to a cottunite structure at pressures of 100 kbar at 1000 C. The larger cation group (from PbO2 to ThO2) transforms to a different orthorhombic modification at high pressures. The dioxides with a Ni2Si-related structure are the most closely packed dioxides known. It is proposed that all polymorphic structures of ZrO2 and the new phase found in the large cation dioxides are possible high-pressure models for the post-rutile and/or post-Fe2N phases of SiO2.

Affiliated with

Also associated with

No associations

Rating

High-pressure phase transformations of fluorite-type dioxides 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 High-pressure phase transformations of fluorite-type dioxides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-pressure phase transformations of fluorite-type dioxides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1274743