High-pressure behavior and polymorphism of titanium oxynitride phase Ti2.85O4N
High-pressure behavior and polymorphism of titanium oxynitride phase Ti2.85O4N
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 (K-0 = 154 +/- 22 GPa with K-0' = 5.2 +/- 0.5) undergoes a first-order transition at 18 GPa to a new orthorhombic (Pmc2(1)) structure. This new high-pressure polymorph remains stable up to 42 GPa, after which the emergence of a second high-pressure monoclinic (P2(1)/c) phase is observed.
8546-8551
Salamat, Ashkan
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Hyett, Geoffrey
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Cabrera, Raul Quesada
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McMillan, Paul F.
8bca9219-06e0-4621-bdae-ad059709a147
Parkin, Ivan P.
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13 May 2010
Salamat, Ashkan
5af74416-eb78-4ee4-844c-2499a79951a8
Hyett, Geoffrey
4f292fc9-2198-4b18-99b9-3c74e7dfed8d
Cabrera, Raul Quesada
1d6e6e23-dd75-48b0-9d51-bd8f081035b8
McMillan, Paul F.
8bca9219-06e0-4621-bdae-ad059709a147
Parkin, Ivan P.
7f95b9c4-1f9d-441c-8d43-ac8ea2554b85
Salamat, Ashkan, Hyett, Geoffrey, Cabrera, Raul Quesada, McMillan, Paul F. and Parkin, Ivan P.
(2010)
High-pressure behavior and polymorphism of titanium oxynitride phase Ti2.85O4N.
The Journal of Physical Chemistry C, 114 (18), .
(doi:10.1021/jp100769r).
Abstract
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 (K-0 = 154 +/- 22 GPa with K-0' = 5.2 +/- 0.5) undergoes a first-order transition at 18 GPa to a new orthorhombic (Pmc2(1)) structure. This new high-pressure polymorph remains stable up to 42 GPa, after which the emergence of a second high-pressure monoclinic (P2(1)/c) phase is observed.
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e-pub ahead of print date: 20 April 2010
Published date: 13 May 2010
Additional Information:
Funded by EPSRC: High pressure chemistry of solids and liquids (EP/D07357X/1)
Organisations:
Organic Chemistry: Synthesis, Catalysis and Flow
Identifiers
Local EPrints ID: 347013
URI: http://eprints.soton.ac.uk/id/eprint/347013
ISSN: 1932-7447
PURE UUID: e80b5c7d-a499-449b-b626-aa72bd4ed56b
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Date deposited: 17 Jan 2013 14:52
Last modified: 15 Mar 2024 03:45
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Contributors
Author:
Ashkan Salamat
Author:
Raul Quesada Cabrera
Author:
Paul F. McMillan
Author:
Ivan P. Parkin
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