Abstract
The local structure of Zn in Al2O3 is studied by the X-ray absorption fine structure (XAFS) method after the implantation of Zn ions and thermal oxidation, which results in the formation of nanoparticles in sapphire. Based on the data of X-ray absorption near edge spectra (XANES), it can be concluded that Zn atoms interact with oxygen and the Al2O3 substrate. The sapphire sample implanted with Zn ions and annealed in oxygen at 600°C contains zinc in three different states: ZnO, zinc spinel (ganite) ZnAl2O4, and metallic Zn in the form of nanoparticles. Since the fraction of zero-valent zinc is close to 50%, very small Zn metal clusters consisting of the minimum possible number of chemically bonded atoms are expected to be formed. The average number of Zn–Zn bonds for each zinc atom in them slightly exceeds unity, i.e., Zn dimers dominate in the sapphire matrix.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
