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http://hdl.handle.net/10553/121181
| Título: | High-Pressure Behavior and Polymorphism of Titanium Oxynitride Phase Ti2.85O4N | Autores/as: | Salamat, Ashkan Hyett, Geoffrey Quesada Cabrera, Raúl McMillan, Paul F. Parkin, Ivan P. |
Clasificación UNESCO: | 220406 Fenómenos de alta presión 221104 Cristalografía 2303 Química inorgánica |
Palabras clave: | Chemical structure Compression Materials Phase transitions Physical and chemical processes |
Fecha de publicación: | 2010 | Publicación seriada: | Journal of Physical Chemistry C | Resumen: | We report a crystallographic study of Ti2.85O4N, a new titanium oxynitride phase discovered using chemical vapor deposition and combinatorial chemistry techniques, under high-pressure conditions. Synchrotron X-ray diffraction was used to monitor structural changes in the material during compression up to 68 GPa. The data indicate that the orthorhombic (Cmcm) ambient-pressure phase (K0 = 154 ± 22 GPa with K0' = 5.2 ± 0.5) undergoes a first-order transition at 18 GPa to a new orthorhombic (Pmc21) structure. This new high-pressure polymorph remains stable up to 42 GPa, after which the emergence of a second high-pressure monoclinic (P21/c) phase is observed. | URI: | http://hdl.handle.net/10553/121181 | ISSN: | 1932-7447 | DOI: | 10.1021/jp100769r | Fuente: | Journal of Physical Chemistry C [ISSN 1932-7447], v. 114(18), p. 8546-8551 |
| Colección: | Artículos |
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