Resolving the debated atomic structure of the metastable cubic SiN<sub>x</sub> tissue phase in nanocomposites with TiN
- Fallqvist, A.
- Olovsson, W.
- Alling, B.
- Palisaitis, J.
- Belov, M.
- Abrikosov, I.
- Hultman, L.
- Persson, P.
Publication date
September 2018
DOI Publisher
American Physical Society (APS)Abstract
The TiN/SiNx nanocomposite and nanolaminate systems are the archetype for super if not ultrahard materials. Yet, the nature of the SiNx tissue phase is debated. Here, we show by atomically resolved electron microscopy methods that SiNx is epitaxially stabilized in a NaCl structure on the adjacent TiN(001) surfaces. Additionally, electron energy loss spectroscopy, supported by first-principles density functional theory calculations infer that SiNx hosts Si vacancies. © 2018 American Physical Society
Add to ORKG