Related Experiment Video
Updated: Jun 5, 2025

Author Spotlight: A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management
Published on: June 23, 2023
Electron-beam induced Mn oxidation in TEM: Insights into the heating effect of Auger excitation
Sung Bo Lee1, Jihye Kwon2, Hyoung Seop Kim3
1Department of Materials Science and Engineering and Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea.
Abstract:
Electron-beam irradiation of α-Mn triggers dramatic microstructural transformations. Transmission electron microscopy (TEM) reveals localized thinning and MnO formation within the irradiated area. Reduced thermal conductivity due to thinning suggests significant local temperature rise by electron-beam irradiation. Finite element analysis (FEA) identifies Auger excitation as the dominant heating mechanism, surging temperatures to ∼2300 K with ultrafast cooling. Our findings indicate that the oxidation of Mn under electron-beam irradiation is primarily attributed to beam heating via Auger excitation, rather than defect formation through sputtering. This conclusion is supported by the fact that the maximum energy transferable from the incident electron beam in TEM is below the minimum displacement energy for Mn.
More Related Videos
08:31Sample Preparation and Experimental Design for In Situ Multi-Beam Transmission Electron Microscopy Irradiation Experiments
Published on: June 27, 2022
09:42Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
Published on: August 7, 2016
Related Concept Videos
Transmission Electron Microscopy
Scanning Electron Microscopy
Fundamental Principles
Accelerated...
Overview of Electron Microscopy
Preparation of Samples for Electron Microscopy
Atomic Emission Spectroscopy: Overview