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http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/2349| High-pressure characterization of multifunctional CrVO4 | |
| Pablo Botella Vives SINHUE LOPEZ MORENO Daniel Errandonea Francisco Javier Manjon Juan Angel Sans Tresserras David Vie Alberto Vomiero | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| https://doi.org/10.1088/1361-648X/ab9408 | |
| CrVO4-type High-pressure Phase transition X-ray diffraction Raman spectroscopy Optical absorption | |
| "The structural stability and physical properties of CrVO(4)under compression were studied by x-ray diffraction, Raman spectroscopy, optical absorption, resistivity measurements, andab initiocalculations up to 10 GPa. High-pressure x-ray diffraction and Raman measurements show that CrVO(4)undergoes a phase transition from the ambient pressure orthorhombic CrVO4-type structure (Cmcm space group, phase III) to the high-pressure monoclinic CrVO4-V phase, which is proposed to be isomorphic to the wolframite structure. Such a phase transition (CrVO4-type -> wolframite), driven by pressure, also was previously observed in indium vanadate. The crystal structure of both phases and the pressure dependence in unit-cell parameters, Raman-active modes, resistivity, and electronic band gap, are reported. Vanadium atoms are sixth-fold coordinated in the wolframite phase, which is related to the collapse in the volume at the phase transition. Besides, we also observed drastic changes in the phonon spectrum, a drop of the band-gap, and a sharp decrease of resistivity. All the observed phenomena are explained with the help of first-principles calculations." | |
| IOP Publishing | |
| 2020 | |
| Artículo | |
| P Botella et al 2020 J. Phys.: Condens. Matter 32 385403 | |
| FÍSICA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Publicaciones Científicas Nanociencias y Materiales |
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| JPhysCondensMatter32(2020)385403.pdf | 2.37 MB | Adobe PDF | Visualizar/Abrir |