On the High-Pressure Phase Transition in GaPO4

Details On the High-Pressure Phase Transition in GaPO4 On the High-Pressure Phase Transition in GaPO4

1998-04-23

arxiv.org/abs/cond-mat/9804258v1

Physics

Condensed Matter

7 pages, 2 figures, 1 table

Scientific paper

10.1007/s100510050181

X-ray diffraction (XRD) experiments have been carried out on quartz-like GaPO4 at high pressure and room temperature. A transition to a high pressure disordered crystalline form occurs at 13.5 GPa. Slight heating using a YAG infrared laser was applied at 17 GPa in order to crystallize the phase in its stability field. The structure of this phase is orthorhombic with space group Cmcm. The cell parameters at the pressure of transition are a=7.306 A, b=5.887 A and c=5.124 A.

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