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Ion-beam-induced defect formation in oxide thin films


EMSL Project ID
60634

Abstract

This project aims to study ion-beam irradiation-induced defects in oxide and semiconductor systems. It is challenging to predict the defects that will form under different irradiation conditions in these materials, particularly at interfaces. We propose to characterize the evolution of crystal structure, chemistry, and composition using both volume-averaged and local probes. We will characterize crystallinity and its evolution after ion irradiation using cross-sectional focused ion beam (FIB) sample preparation in EMSL, followed by measurements of local structural changes using scanning transmission electron microscopy (STEM) in 3410 and RPL. Based on our experiments, we will conduct density functional theory (DFT) simulations to explore defect formation and energetics.

Project Details

Start Date
2022-10-30
End Date
2023-10-01
Status
Closed

Team

Principal Investigator

Steven Spurgeon
Institution
Pacific Northwest National Laboratory

Team Members

Bethany Matthews
Institution
Pacific Northwest National Laboratory

Michel Sassi
Institution
Pacific Northwest National Laboratory