TY - GEN
T1 - Atomistic observation of electron irradiation-induced defects in CeO 2
AU - Takaki, Seiya
AU - Yamamoto, Tomokazu
AU - Kutsuwada, Masanori
AU - Yasuda, Kazuhiro
AU - Matsumura, Syo
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - We have investigated the atomistic structure of radiation-induced defects in CeCO2 formed under 200 keV electron irradiation. Dislocation loops on {111} habit planes are observed, and they grow accompanying strong strain-field. Atomic resolution scanning transmission electron microscopy (STEM) observations with high angle annular dark-field (HAADF) and annular bright-field (ABF) imaging techniques showed that no additional Ce layers are inserted at the position of the dislocation loop, and that strong distortion and expansion is induced around the dislocation loops. These results are discussed that dislocation loops formed under electron irradiation are non-stoichiometric defects consist of oxygen interstitials.
AB - We have investigated the atomistic structure of radiation-induced defects in CeCO2 formed under 200 keV electron irradiation. Dislocation loops on {111} habit planes are observed, and they grow accompanying strong strain-field. Atomic resolution scanning transmission electron microscopy (STEM) observations with high angle annular dark-field (HAADF) and annular bright-field (ABF) imaging techniques showed that no additional Ce layers are inserted at the position of the dislocation loop, and that strong distortion and expansion is induced around the dislocation loops. These results are discussed that dislocation loops formed under electron irradiation are non-stoichiometric defects consist of oxygen interstitials.
UR - http://www.scopus.com/inward/record.url?scp=84888043116&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84888043116&partnerID=8YFLogxK
U2 - 10.1557/opl.2013.199
DO - 10.1557/opl.2013.199
M3 - Conference contribution
AN - SCOPUS:84888043116
SN - 9781605114910
T3 - Materials Research Society Symposium Proceedings
SP - 93
EP - 98
BT - Advances in Materials for Nuclear Energy
T2 - 2012 MRS Fall Meeting
Y2 - 25 November 2012 through 30 November 2012
ER -