Synthesis and Characterization of Rare-earth-free Magnetic Manganese Bismuth Nanocrystals

Journal Article · Thu Jan 01 00:00:00 EST 2015 · RSC Advances, 5(8):5567-5570

DOI:https://doi.org/10.1039/C4RA12440E· OSTI ID:1188897

Shen, Jian Q.; Cui, Huizhong; Huang, Xiaopeng; Gong, Maogang; Qin, Wei; Kirkeminde, Alec; Cui, Jun; Ren, Shenqiang

Earth abundant manganese bismuth (MnBi) has long been of interest due to its large magnetocrystalline anisotropy and high energy density for advanced permanent magnet applications. However, solution synthesis of MnBi phase is challenging due to the reduction potential mismatch between Mn and Bi elements. In this study, we show a versatile MnBi synthesis method involving the metal co-reduction followed by thermal annealing. The magnetically hard MnBi crystalline phase is then exchange coupled with magnetically soft cobalt coating. Our processing approach offers a promising strategy for manufacturing rare-earth-free magnetic nanocrystals.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1188897
• Report Number(s): PNNL-SA-109657; CJ0100000
• Journal Information: RSC Advances, 5(8):5567-5570, Journal Name: RSC Advances, 5(8):5567-5570
• Country of Publication: United States
• Language: English

Related Subjects

magnetic
nanocrystals
rare earth free