TY - JOUR
T1 - Local crystal structure analysis with 10-pm accuracy using scanning transmission electron microscopy
AU - Saito, Mitsuhiro
AU - Kimoto, Koji
AU - Nagai, Takuro
AU - Fukushima, Shun
AU - Akahoshi, Daisuke
AU - Kuwahara, Hideki
AU - Matsui, Yoshio
AU - Ishizuka, Kazuo
N1 - Funding Information:
This study was supported in part by Grants-in-Aid for Scientific Research (KAKENHI) on Priority Areas, ‘Nano Materials Science for Atomic Scale Modification 474’, ‘Kibankenkyu A’ and ‘Houga-kenkyu’ from Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. This work is supported in part by the Nanotechnology Support Project, JST-CREST, the NEDO/MIRAI project and the grant-in-aid for Scientific Research (C), 18560027.
PY - 2009/6
Y1 - 2009/6
N2 - We demonstrate local crystal structure analysis based on annular dark-field (ADF) imaging in scanning transmission electron microscopy (STEM). Using a stabilized STEM instrument and customized software, we first realize high accuracy of elemental discrimination and atom-position determination with a 10-pm-order accuracy, which can reveal major cation displacements associated with a variety of material properties, e.g. ferroelectricity and colossal magnetoresistivity. A-site ordereddisordered perovskite manganites Tb0.5Ba0.5MnO3 are analysed; A-site ordering and a Mn-site displacement of 12 pm are detected in each specific atomic column. This method can be applied to practical and advanced materials, e.g. strongly correlated electron materials.
AB - We demonstrate local crystal structure analysis based on annular dark-field (ADF) imaging in scanning transmission electron microscopy (STEM). Using a stabilized STEM instrument and customized software, we first realize high accuracy of elemental discrimination and atom-position determination with a 10-pm-order accuracy, which can reveal major cation displacements associated with a variety of material properties, e.g. ferroelectricity and colossal magnetoresistivity. A-site ordereddisordered perovskite manganites Tb0.5Ba0.5MnO3 are analysed; A-site ordering and a Mn-site displacement of 12 pm are detected in each specific atomic column. This method can be applied to practical and advanced materials, e.g. strongly correlated electron materials.
KW - Annular dark-field imaging
KW - Channelling
KW - Crystal structure analysis
KW - Perovskite oxide
KW - Scanning transmission electron microscopy
KW - Software
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U2 - 10.1093/jmicro/dfn023
DO - 10.1093/jmicro/dfn023
M3 - Article
C2 - 19033323
AN - SCOPUS:68349139896
SN - 2050-5698
VL - 58
SP - 131
EP - 136
JO - Microscopy (Oxford, England)
JF - Microscopy (Oxford, England)
IS - 3
ER -