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DC Field | Value | Language |
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dc.contributor.author | Azzopardi, Keith M. | - |
dc.contributor.author | Brincat, Jean-Pierre | - |
dc.contributor.author | Grima, Joseph N. | - |
dc.contributor.author | Gatt, Ruben | - |
dc.date.accessioned | 2017-04-27T07:41:01Z | - |
dc.date.available | 2017-04-27T07:41:01Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | Azzopardi, K. M., Brincat, J. P., Grima, J. N., & Gatt, R. (2005). Anomalous elastic properties in stishovite - Supporting information. RSC Advances, 12, 2-4. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar//handle/123456789/18647 | - |
dc.description.abstract | Auxetics are materials which have a negative Poisson's ratio, that is, upon uniaxial tensile loading, they also expand in a direction perpendicular to the applied force. Here, we analyze the elastic constants of stishovite, a high pressure silica polymorph which is known to be a significant constituent of the earth's mantle, and show that it exhibits a negative Poisson's ratio when stressed in a range of directions in the (100), (010) and (001) planes under specific ambient pressure ranges. We explain this behaviour through mechanisms involving rotations and distortions of the constituent octahedra. These findings have important practical implications since stishovite is one of the hardest known oxides, and has proven to be important to various fields ranging from seismology to materials science. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Royal Society of Chemistry | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Silica | en_GB |
dc.subject | Materials -- Elastic properties | en_GB |
dc.title | Anomalous elastic properties in stishovite | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1039/c4ra12072h | - |
Appears in Collections: | Scholarly Works - FacSciChe Scholarly Works - FacSciMet |
Files in This Item:
File | Description | Size | Format | |
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OA - Anomalous elastic properties in Stishovite.1.pdf | Anomalous elastic properties in stishovite - supporting information | 212.78 kB | Adobe PDF | View/Open |
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