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タイトル: | Molybdenum-Ruthenium-Carbon Solid-Solution Alloy Nanoparticles: Can They Be Pseudo-Technetium Carbide? |
著者: | Okazoe, Shinya Kusada, Kohei https://orcid.org/0000-0002-9679-6749 (unconfirmed) Yoshida, Yukihiro Maesato, Mitsuhiko Yamamoto, Tomokazu Toriyama, Takaaki Matsumura, Syo Kawaguchi, Shogo Kubota, Yoshiki Nanba, Yusuke Aspera, Susan Menez Koyama, Michihisa Kitagawa, Hiroshi |
著者名の別形: | 岡副, 眞也 草田, 康平 吉田, 幸大 前里, 光彦 北川, 宏 |
キーワード: | Alloys Carbon Electronic structure Magnetic properties Metals |
発行日: | 8-Nov-2023 |
出版者: | American Chemical Society (ACS) |
誌名: | Journal of the American Chemical Society |
巻: | 145 |
号: | 44 |
開始ページ: | 24005 |
終了ページ: | 24011 |
抄録: | Technetium (Tc), atomic number 43, is an element that humans cannot freely use even in the 21st century because Tc is radioactive and has no stable isotope. In this report, we present molybdenum–ruthenium–carbon solid-solution alloy (Mo_xRu_{1-x}C_y) nanoparticles (NPs) that are expected to have an electronic structure similar to that of technetium carbide (TcC_y). Mo_xRu_{1-x}C_y NPs were synthesized by annealing under a helium/hydrogen atmosphere following thermal decomposition of metal precursors. The obtained NPs had a solid-solution structure in the whole composition range. Mo_xRu_{1-x}C_y with a cubic structure (down to 30 atom % Mo in the metal ratio) showed a superconducting state, and the transition temperature (Tc) increased with increasing Mo composition. The continuous change in Tc across that of TcC_y indicates the continuous control of the electronic structure by solid-solution alloying, leading to pseudo-TcC_y. Density functional theory calculations indicated that the synthesized Mo_{0.53}Ru_{0.47}C_{0.41} has a similar electronic structure to TcC_{0.41}. |
著作権等: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Journal of the American Chemical Society], Copyright © 2023 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.3c06594. The full-text file will be made open to the public on 26 October 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/286263 |
DOI(出版社版): | 10.1021/jacs.3c06594 |
PubMed ID: | 37883673 |
出現コレクション: | 学術雑誌掲載論文等 |
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