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SCI-E Article

Synthesis and magnetic properties of Sb added MnBi magnets for applications at sub-zero temperatures
성명 김종렬 ()
소속 공학대학 재료화학공학과
캠퍼스
우수선정주 2022년 02월 4째주
Author Bae, Cheoljun (Dept Mat Sci & Chem Engn); Lee, Gyutae (Dept Mat Sci & Chem Engn); Kang, Min Kyu (Dept Mat Sci & Chem Engn); Lee, Hansol (Dept Mat Sci & Chem Engn); 김종렬 (Dept Mat Sci & Chem Engn) corresponding author;
Corresponding Author Info Kim, J (corresponding author), Hanyang Univ, Dept Mat Sci & Chem Engn, Ansan 15588, South Korea.
E-mail 이메일jina@hanyang.ac.kr
Document Type Article
Source JOURNAL OF ALLOYS AND COMPOUNDS Volume:899 Issue: Pages:- Published:2022
Times Cited 0
External Information http://dx.doi.org/10.1016/j.jallcom.2021.163365
Abstract MnBi-LTP bulk magnets containing substitutional Sb element were fabricated using gas-atomizing process, surfactant-assisted wet magnetic compaction process, and thermal compaction process. Magnetic properties and microstructures were investigated according to the processing parameters. It was found that substitutional Sb element effectively refined the grain size of gas-atomized powders. The conventional ball milling process was able to pulverize these powders into fine particles with a single crystalline structure and minimize their phase decomposition, resulting in a (BH)(max) of 11.0 MGOe. By analyzing the effects of the compaction pressure on the density and magnetic alignment during the surfactant-assisted wet compaction process, Mn54Bi45.9Sb0.1 bulk magnet with H-c of 10.0 kOe at room temperature and temperature coefficient H-c of 0.68%/K was successfully fabricated. Furthermore, effects of Sb element on the temperature dependency of H-c in the bulk magnet were discussed. (C) 2021 Elsevier B.V. All rights reserved.
Web of Science Categories Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
Funding Future Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2016M3D1A1027836]
Language English
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