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Title: Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system

Abstract

To understand the crystallographic relation between the Bergman-type icosahedral quasicrystal and its approximant-T structure, we have investigated the crystallographic features of prepared Zn-Mg-Al alloy samples, mainly by transmission electron microscopy. It was found that there existed three kinds of regions: that is, C14-Laves, approximant-T, and icosahedral-quasicrystal regions, in Zn-Mg-Al alloy samples with the composition of Zn-36at.%Mg-9at.%Al. Among these regions, in particular, we tried to determine an orientation relationship between neighboring icosahedral-quasicrystal and approximant-T regions. Based on the determined relationship, for instance, four threefold rotatory-inversion axes in the T structure were found to be parallel to four of ten threefold rotatory-inversion axes in the icosahedral quasicrystal. It was thus understood that the atomic arrangements of the Bergman-type icosahedral quasicrystal and its approximant-T structure are likely to resemble each other.

Authors:
;  [1];  [1];  [2]
  1. Department of Electronic and Physical system, Waseda University, 3-4-1, Okubo, Shinjuku-ku, Tokyo, 169-8555 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
22608252
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1763; Journal Issue: 1; Conference: FMS2015: 2. international symposium on frontiers in materials science, Tokyo (Japan), 19-21 Nov 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM COMPOUNDS; CRYSTALLOGRAPHY; ELECTRONS; MAGNESIUM COMPOUNDS; TERNARY ALLOY SYSTEMS; TRANSMISSION; TRANSMISSION ELECTRON MICROSCOPY; ZINC COMPOUNDS

Citation Formats

Nakayama, Kei, E-mail: k.n@aoni.waseda.jp, Watanabe, Junya, Koyama, Yasumasa, E-mail: ykoyama@waseda.jp, and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051. Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system. United States: N. p., 2016. Web. doi:10.1063/1.4961354.
Nakayama, Kei, E-mail: k.n@aoni.waseda.jp, Watanabe, Junya, Koyama, Yasumasa, E-mail: ykoyama@waseda.jp, & Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051. Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system. United States. doi:10.1063/1.4961354.
Nakayama, Kei, E-mail: k.n@aoni.waseda.jp, Watanabe, Junya, Koyama, Yasumasa, E-mail: ykoyama@waseda.jp, and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051. Fri . "Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system". United States. doi:10.1063/1.4961354.
@article{osti_22608252,
title = {Orientation relationship between the T structure and the icosahedral quasicrystal in the Zn-Mg-Al alloy system},
author = {Nakayama, Kei, E-mail: k.n@aoni.waseda.jp and Watanabe, Junya and Koyama, Yasumasa, E-mail: ykoyama@waseda.jp and Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26, Nishiwaseda, Shinjuku-ku, Tokyo, 169-0051},
abstractNote = {To understand the crystallographic relation between the Bergman-type icosahedral quasicrystal and its approximant-T structure, we have investigated the crystallographic features of prepared Zn-Mg-Al alloy samples, mainly by transmission electron microscopy. It was found that there existed three kinds of regions: that is, C14-Laves, approximant-T, and icosahedral-quasicrystal regions, in Zn-Mg-Al alloy samples with the composition of Zn-36at.%Mg-9at.%Al. Among these regions, in particular, we tried to determine an orientation relationship between neighboring icosahedral-quasicrystal and approximant-T regions. Based on the determined relationship, for instance, four threefold rotatory-inversion axes in the T structure were found to be parallel to four of ten threefold rotatory-inversion axes in the icosahedral quasicrystal. It was thus understood that the atomic arrangements of the Bergman-type icosahedral quasicrystal and its approximant-T structure are likely to resemble each other.},
doi = {10.1063/1.4961354},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1763,
place = {United States},
year = {2016},
month = {8}
}