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Título: | Phase diagram studies on iron and nickel silicides: high-pressure experiments and ab initio calculations |
Autor: | Santamaría-Pérez, D.; Errandonea, D.; Vegas, Ángel CSIC; Nuss, J.; Jansen, M.; Rodríguez-Hernández, P.; Muñoz, A. CSIC; Boehler, R. | Fecha de publicación: | 2008 | Editor: | IOP Publishing | Citación: | Journal of Physics - Conference Series 121: 022013 (2008) | Resumen: | We performed high-pressure ADXRD studies on Fe5Si3 and Ni2Si up to 75 GPa. No evidence of the occurrence of a phase transition was observed in them. Fe5Si3 was found to compress isotropically, but an anisotropic compression was observed in Ni2Si. These results are supported by ab initio total-energy calculations, which for Fe5Si3 also predicted a transition at 283 GPa from the hexagonal P63/mcm phase to a cubic phase. High-pressure melting studies were conducted on FeSi up to 70 GPa. We found a change in the melting slope at 12 GPa, which is attributed to the intersection of the melting curve with the phase boundary between epsilon-FeSi and CsCl-type FeSi. Finally, an equation of state for Fe5Si3 and Ni2Si is reported. | Descripción: | 8 pags., 6 figs.-- Joint 21st AIRAPT and 45th EHPRG Int. Conf. on High Pressure Science and Technology | Versión del editor: | https://doi.org/10.1088/1742-6596/121/2/022013 | URI: | http://hdl.handle.net/10261/244759 | DOI: | 10.1088/1742-6596/121/2/022013 | ISSN: | 1742-6588 | E-ISSN: | 1742-6596 |
Aparece en las colecciones: | (IQF) Artículos |
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Phase diagram studies.pdf | Artículo principal | 1,06 MB | Adobe PDF | Visualizar/Abrir |
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