A combined XAS and XRD Study of the High-Pressure Behaviour of GaAsO4 Berlinite

Physics – Condensed Matter – Materials Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

8 pages, 5 figures, LaTeX2e

Scientific paper

10.1209/epl/i1997-00500-3

Combined X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) experiments have been carried out on GaAsO4 (berlinite structure) at high pressure and room temperature. XAS measurements indicate four-fold to six-fold coordination changes for both cations. The two local coordination transformations occur at different rates but appear to be coupled. A reversible transition to a high pressure crystalline form occurs around 8 GPa. At a pressure of about 12 GPa, the system mainly consists of octahedral gallium atoms and a mixture of arsenic in four-fold and six-fold coordinations. A second transition to a highly disordered material with both cations in six-fold coordination occurs at higher pressures and is irreversible.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A combined XAS and XRD Study of the High-Pressure Behaviour of GaAsO4 Berlinite 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 A combined XAS and XRD Study of the High-Pressure Behaviour of GaAsO4 Berlinite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A combined XAS and XRD Study of the High-Pressure Behaviour of GaAsO4 Berlinite will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-265799

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.