| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Diamond Structure BeO, Designable Super-Hard Materials and Semiconductor Be-Diamond |
| XU Ji-An1, BI Yan1, SUN Zong-Qi1, XIE Hong-Sen2 |
| 1Institute of Fluid Physics, China Academy Engineering Physics, Mianyang 6219002Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 |
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| Cite this article: |
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XU Ji-An, BI Yan, SUN Zong-Qi et al 2009 Chin. Phys. Lett. 26 016202 |
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Abstract It is possible for Beryllium oxide (BeO) to have a cubic diamond structure although it normally has a hexagonal structure under ambient conditions. As the solution of cubic BN and diamond, the solid solution of cubic BeO-diamond or BeO-cBN-diamond can potentially be a kind of super-hard materials with designable hardness; and this solution has also been confirmed based on our preliminary first principles calculations. In addition, the nonstoichiometry of BeO could create a mobile carrier in the cubic BeO-C or BeO-BN-C system and it might lead to a new type of semiconductor Be-diamond.
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| Keywords:
62.50.-p
81.05.Jc
81.05.Zx
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Received: 31 July 2008
Published: 24 December 2008
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| PACS: |
62.50.-p
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(High-pressure effects in solids and liquids)
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81.05.Jc
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81.05.Zx
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(New materials: theory, design, and fabrication)
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