TY - JOUR
T1 - Electron diffraction study on chemical short-range order in covalent amorphous solids
AU - Ishimaru, Manabu
AU - Hirata, Akihiko
AU - Naito, Muneyuki
N1 - Funding Information:
We would like to thank Professor Emeritus Yoshihiko Hirotsu (Osaka University) for his establishment of a precise quantitative analytical technique of electron diffraction intensities for radial distribution function analysis. Ion irradiated specimens were provided by Kurt E. Sickafus, J. A. Valdez (Los Alamos National Laboratory), William J. Weber, Yanwen Zhang (University of Tennessee, Oak Ridge National Laboratory), Xuemei Wang, Wei-Kan Chu (University of Houston). TEM observations were performed at the Comprehensive Analysis Center, ISIR, Osaka University. This work was partially supported by Grant-in-Aid for Scientific Research (C) (Grant No. 22560696 ) from the Ministry of Education, Sports, Science, and Technology, Japan.
PY - 2012/4/15
Y1 - 2012/4/15
N2 - Studies on radiation-induced structural changes of solids are of technological importance for realizing desirable material properties and for predicting the fate of materials under radiation environments. It is known that energetic particles, such as electrons, neutrons, and ions, produce extensive damage, and may eventually lead to amorphization. Amorphization is often accompanied with significant volume changes and concomitant microcracking. To clarify the amorphization mechanism, knowledge of amorphous structures is required. Radial distribution function analysis is one of the useful ways to characterize topological and chemical disorder in amorphous networks. Here, we review the advantage of electron diffraction for analyzing short-range order of amorphous materials and show some examples of radial distribution functions obtained by our group.
AB - Studies on radiation-induced structural changes of solids are of technological importance for realizing desirable material properties and for predicting the fate of materials under radiation environments. It is known that energetic particles, such as electrons, neutrons, and ions, produce extensive damage, and may eventually lead to amorphization. Amorphization is often accompanied with significant volume changes and concomitant microcracking. To clarify the amorphization mechanism, knowledge of amorphous structures is required. Radial distribution function analysis is one of the useful ways to characterize topological and chemical disorder in amorphous networks. Here, we review the advantage of electron diffraction for analyzing short-range order of amorphous materials and show some examples of radial distribution functions obtained by our group.
KW - Amorphous
KW - Electron diffraction
KW - GaN
KW - Radial distribution function
KW - SiC
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U2 - 10.1016/j.nimb.2011.12.054
DO - 10.1016/j.nimb.2011.12.054
M3 - Article
AN - SCOPUS:84858340781
SN - 0168-583X
VL - 277
SP - 70
EP - 76
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -