Journal
APPLIED PHYSICS LETTERS
Volume 98, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3556564
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Funding
- EPSRC [CAF EP/G004072/1]
- ThyssenKrupp AG
- Bayer MaterialScience AG
- Salzgitter Mannesmann Forschung GmbH
- Robert Bosch GmbH
- Benteler Stahl/Rohr GmbH
- Bayer Technology Services GmbH
- state of North-Rhine Westphalia
- EU
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We use ab initio calculations to examine thermodynamic factors that could promote the formation of recently proposed unique oP10-FeB4 and oP12-FeB2 compounds. We demonstrate that these compact boron-rich phases are stabilized further under pressure. We also show that chromium tetraboride is more stable in the new oP10 rather than the reported oI10 structure which opens up the possibility of realizing an oP10-(FexCr1-x)B-4 pseudobinary material. In addition to exhibiting remarkable electronic features, oP10-FeB4 and oP12-FeB2 are expected to be harder than the known Fe-B compounds commonly used for hard coating applications. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556564]
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