Experimental and theoretical investigation of ThGeO[subscript 4] at high pressure

  title={Experimental and theoretical investigation of ThGeO[subscript 4] at high pressure},
  author={Daniel Errandonea and Ravhi S Kumar and Lourdes Gracia and Armando Beltr{\'a}n and Srungarpu Nagabhusan Achary and Avesh K. Tyagi},
  journal={Physical Review B},
We report here the combined results of angle-dispersive x-ray diffraction experiments performed on ThGeO{sub 4} up to 40 GPa and total-energy density-functional theory calculations. Zircon-type ThGeO{sub 4} is found to undergo a pressure-driven phase transition at 11 GPa to the tetragonal scheelite structure. A second phase transition to a monoclinic M-fergusonite type is found beyond 26 GPa. The same transition has been observed in samples that crystallize in the scheelite phase at ambient… Expand
19 Citations
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