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Article

High-Pressure Structural Behavior and Equation of State of Kagome Staircase Compound, Ni3V2O8

1
Departamento de Física Aplicada-ICMUV, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Spain
2
Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
*
Author to whom correspondence should be addressed.
Crystals 2020, 10(10), 910; https://doi.org/10.3390/cryst10100910
Received: 17 September 2020 / Revised: 3 October 2020 / Accepted: 5 October 2020 / Published: 8 October 2020
We report on high-pressure synchrotron X-ray diffraction measurements on Ni3V2O8 at room-temperature up to 23 GPa. According to this study, the ambient-pressure orthorhombic structure remains stable up to the highest pressure reached in the experiments. We have also obtained the pressure dependence of the unit-cell parameters, which reveals an anisotropic compression behavior. In addition, a room-temperature pressure–volume third-order Birch–Murnaghan equation of state has been obtained with parameters: V0 = 555.7(2) Å3, K0 = 139(3) GPa, and K0′ = 4.4(3). According to this result, Ni3V2O8 is the least compressible kagome-type vanadate. The changes of the crystal structure under compression have been related to the presence of a chain of edge-sharing NiO6 octahedral units forming kagome staircases interconnected by VO4 rigid tetrahedral units. The reported results are discussed in comparison with high-pressure X-ray diffraction results from isostructural Zn3V2O8 and density-functional theory calculations on several isostructural vanadates. View Full-Text
Keywords: vanadate; kagome compound; high pressure; X-ray diffraction; equation of state vanadate; kagome compound; high pressure; X-ray diffraction; equation of state
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MDPI and ACS Style

Diaz-Anichtchenko, D.; Turnbull, R.; Bandiello, E.; Anzellini, S.; Errandonea, D. High-Pressure Structural Behavior and Equation of State of Kagome Staircase Compound, Ni3V2O8. Crystals 2020, 10, 910. https://doi.org/10.3390/cryst10100910

AMA Style

Diaz-Anichtchenko D, Turnbull R, Bandiello E, Anzellini S, Errandonea D. High-Pressure Structural Behavior and Equation of State of Kagome Staircase Compound, Ni3V2O8. Crystals. 2020; 10(10):910. https://doi.org/10.3390/cryst10100910

Chicago/Turabian Style

Diaz-Anichtchenko, Daniel, Robin Turnbull, Enrico Bandiello, Simone Anzellini, and Daniel Errandonea. 2020. "High-Pressure Structural Behavior and Equation of State of Kagome Staircase Compound, Ni3V2O8" Crystals 10, no. 10: 910. https://doi.org/10.3390/cryst10100910

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