Cu-doping induced tuning of magnetic properties and phase transformation in MnBi alloys
Source abstract
Abstract
This study investigates the effect of Cu doping on the magnetic properties of MnBi alloy at sub-ambient temperatures. The Curie temperatures (Tc) were observed at 175.2 and 161.6 K for Mn52Bi45Cu3 and Mn51Bi45Cu4 alloys, respectively. The Mn55Bi45 sample demonstrates a notable saturation magnetization (Ms) of 72 emu/g, reaching 90% of the theoretical value, indicating the successful synthesis of high-purity ferromagnetic low-temperature phase MnBi. Compared to Mn55Bi45, all Cu-doped samples exhibit higher coercivity (Hc) within the temperature range of 10–200 K. In particular, the sample with 4 at. % Cu exhibits an Hc of 7.4 kOe at 10 K, which is 37 times higher than that of the MnBi sample (0.2 kOe), and it remains significantly higher than that of the 0–3 at. % Cu-doped samples, even at 200 K. Further details of this investigation are presented in this paper.
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Research context
OpenAlex topics: Magnetic Properties of Alloys · Magnetic Properties and Applications · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science and Engineering, Tongji University 1 , Shanghai 201804, China
Baosteel Magnetics Co. Ltd. 2 , No. 2029, Baoyang Road, Baoshan District, Shanghai 201999, China
Institute of Materials Science, Vietnam Academy of Science and Technology 3 , No. 18, Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam
Vietnam Academy of Science and Technology, The Graduate University of Sciences and Technology 4 , No. 18, Hoang Quoc Viet Road, Cau Giay District, Hanoi, Vietnam
Funding
National Key Research and Development Program of China · China Postdoctoral Science Foundation · Shanghai Municipal Science and Technology
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Show source-provided references
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