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arXiv · 2602.22169

High-pressure single-crystal X-ray diffraction study of ErVO4

Josu Sanchez-Martin·Gaston Garbarino·Samuel Gallego-Parra·Alfonso Munoz·Sushree Sarita Sahoo·Kanchana Venkatakrishnan·Ganapathy Vaitheeswaran·Daniel Errandonea
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Abstract

We present an investigation into the crystal structure of ErVO4 under variable pressure conditions. The high-pressure single crystal X-ray diffraction experiments performed employing helium as the pressure medium facilitated structure refinements up to 24.1(2) GPa. The transition from zircon to scheelite was observed at a pressure of 7.9(1) GPa. In contrast to previous reports, we did not detect any sign of phase coexistence. We also did not observe the second phase transitions previously predicted by density-functional theory to occur below 20 GPa. The determination of the pressure dependence of unit-cell parameters and volume yields precise values for linear compressibility of each axis and the pressure-volume equation of state for both the zircon and scheelite phases. Additional information on the mechanical properties of ErVO4, obtained from density-functional theory calculations, is also reported.

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Josu Sanchez-Martin, Gaston Garbarino, Samuel Gallego-Parra, Alfonso Munoz, Sushree Sarita Sahoo, Kanchana Venkatakrishnan, Ganapathy Vaitheeswaran, Daniel Errandonea. 2026-02-25. High-pressure single-crystal X-ray diffraction study of ErVO4. https://doi.org/10.1021/acs.inorgchem.5c00112

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