LiCrO2 under pressure
The high-pressure behaviour of LiCrO, a compound isostructural to the battery compound LiCoO, has been investigated by synchrotron-based angle-dispersive X-ray powder diffraction, Raman spectroscopy, and resistance measurements up to 41, 30, and 10 Gpa, respectively. The stability of the layered str...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:202520 |
| Acceso en línea: | https://ddd.uab.cat/record/202520 https://dx.doi.org/urn:doi:10.3390/cryst9010002 |
| Access Level: | acceso abierto |
| Palabra clave: | High-pressure X-ray diffraction Raman spectroscopy Equation of state |
| Sumario: | The high-pressure behaviour of LiCrO, a compound isostructural to the battery compound LiCoO, has been investigated by synchrotron-based angle-dispersive X-ray powder diffraction, Raman spectroscopy, and resistance measurements up to 41, 30, and 10 Gpa, respectively. The stability of the layered structured compound on a triangular lattice with R-3m space group is confirmed in all three measurements up to the highest pressure reached. The dependence of lattice parameters and unit-cell volume with pressure has been determined from the structural refinements of X-ray diffraction patterns that are used to extract the axial compressibilities and bulk modulus by means of Birch-Murnaghan equation-of-state fits. The pressure coefficients for the two Raman-active modes, A and E, and their mode-Grüneisen parameters are reported. The electrical resistance measurements indicate that pressure has little influence in the resistivity up to 10 GPa. The obtained results for the vibrational and structural properties of LiCrO under pressure are in line with the published results of the similar studies on the related compounds. Research work reported in this article contributes significantly to enhance the understanding on the structural and mechanical properties of LiCrO and related lithium compounds. |
|---|