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Título: | Raman frequencies of diamond under non-hydrostatic pressure |
Autor: | Idris Bakhit, Alaa Mohammed CSIC ORCID; Mutisya, S.; Scandolo, S. | Fecha de publicación: | 2021 | Editor: | American Institute of Physics | Citación: | Applied Physics Letters 119(21): 211902 (2021) | Resumen: | The Raman frequencies of diamond subjected to non-hydrostatic uniaxial stress along the [001] and [111] crystallographic axes have been calculated with density-functional-theory methods and the results fitted to a simple analytical form. The data are analyzed in the context of the recently proposed use of the shift of the high-frequency edge of the Raman band of diamond as a pressure scale in diamond-anvil cell experiments. Combining theoretical and experimental data, we are able to determine the stress state of the diamond anvil in ultra-high-pressure experiments. We find that shear stresses close to the tip of the anvil can reach values exceeding 1 Mbar. | Versión del editor: | https://doi.org/10.1063/5.0069818 | URI: | http://hdl.handle.net/10261/264394 | DOI: | 10.1063/5.0069818 | ISSN: | 0003-6951 |
Aparece en las colecciones: | (CFM) Artículos |
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ramanpressur.pdf | 1,53 MB | Adobe PDF | Visualizar/Abrir |
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