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Title: Direct observation of the structural and electronic changes of Li{sub 2}MnO{sub 3} during electron irradiation

This study focuses on the effects of electron beam induced irradiation to the layered oxide Li{sub 2}MnO{sub 3}. Aberration-corrected scanning transmission electron microscopy and electron energy loss spectroscopy are used to characterize structural and electronic transitions in the material during irradiation, with a focus on changes in Mn valence and O content. This truly in situ irradiation allows for specific particle tracking, dose quantification, and real-time observation, while demonstrating many parallels to the oxide's structure evolution observed during electrochemical cycling. Furthermore, it is demonstrated that typical imaging conditions are not severe enough to induce damage to the pristine oxide.
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
  2. Materials Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439 (United States)
  3. Argonne National Laboratory, Chemical Sciences and Engineering, 9700 S. Cass Avenue, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
22303546
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTROCHEMISTRY; ELECTRON BEAMS; ENERGY-LOSS SPECTROSCOPY; IRRADIATION; LITHIUM COMPOUNDS; MANGANATES; OXIDES; PHYSICAL RADIATION EFFECTS; TRANSMISSION ELECTRON MICROSCOPY