Abstract
An unusual diffusion enhancement of Ti in Ar+ prebombarded MgO(100) was observed during postbombardment annealing at 1100 °C. Ti diffusion in the postannealed sample is enhanced with respect to the sample without postannealing. Thermal dissociation of small cationic vacancy clusters is known to be responsible for this type of radiation enhanced diffusion (RED), or nonsteady state RED. It is inferred from previous work that the small vacancy clusters are mainly divacancies. The unusual diffusion enhancement is attributed to thermal dissociation of large vacancy clusters during postannealing, leading to a divacancy creation mechanism. A model is proposed which qualitatively explains the observed diffusion enhancement.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
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.