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Properties of Dipole-Mode Vibrational Energy Losses Recorded From a TEM Specimen

Published online by Cambridge University Press:  01 September 2020

Ray F. Egerton ,
Kartik Venkatraman Open the ORCID record for Kartik Venkatraman [Opens in a new window] ,
Katia March  and
Peter A. Crozier
Ray F. Egerton*
Affiliation:
Physics Department, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
Kartik Venkatraman
Affiliation:
School for Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ 85281, USA
Katia March
Affiliation:
Eyring Materials Center, Arizona State University, Tempe, AZ 85281, USA
Peter A. Crozier
Affiliation:
School for Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ 85281, USA
*
*Author for correspondence: Ray F. Egerton, E-mail: regerton@ualberta.ca
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Abstract

The authors discuss the dipole vibrational modes that predominate in the energy-loss spectra of ionic materials below 1 eV, concentrating on thin-film specimens of typical transmission electron microscopy (TEM) thickness. The thickness dependence of the intensity is shown to be a useful guide to the bulk or surface character of vibrational peaks. The lateral and depth resolution of the energy-loss signal is investigated with the aid of finite-element calculations.

Keywords

AEMEELSradiation damageTEM
Type
Software and Instrumentation
Information
Microscopy and Microanalysis , Volume 26 , Issue 6 , December 2020 , pp. 1117 - 1123
Copyright
Copyright © Microscopy Society of America 2020

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