2009/05/07 by D. Errandonea, Daniel Errandonea, R. Lacomba-Perales +6 · 98 citations
Chemistry · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Chemistry #Compressibility #Crystal Structures and Properties #Crystallography #Diffraction #Geochemistry #Geological and Geochemical Analysis #Geology #High pressure #High-pressure geophysics and materials #Materials science #Metallurgy #Mineralogy #Optics #Phase (matter) #Phase transition #Physics #Scheelite #Thermodynamics #Zircon #cond-mat.mtrl-sci #physics.geo-ph
paper · pdf · doi:10.1103/physrevb.79.184104
published in Physical Review B 79(18) (American Physical Society) · 34 pages, 2 Tables, 11 Figures
openalex publication_date 2009/05/07 · arxiv created 2009/05/08 · arxiv updated 2010/05/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Room temperature angle-dispersive x-ray diffraction measurements on zircon-type EuVO4, LuVO4, and ScVO4 were performed up to 27 GPa. In all the three compounds we found evidence of a pressure-induced structural phase transformation from zircon to a scheelite-type structure. The onset of the transition is near 8 GPa, but the transition is sluggish and low-pressure and high-pressure phases coexist in a pressure range of about 10 GPa. In EuVO4 and LuVO4 a second transition to a M-fergusonite-type phase was found near 21 GPa. The equations of state for the zircon and scheelite phases are also determined. Among the three studied compounds, we found that ScVO4 is less compressible than EuVO4 and LuVO4, being the most incompressible orthovanadate studied to date. The sequence of structural transitions and compressibilities are discussed in comparison with other zircon-type oxides.