title: Single domain SmCo5@Co exchange-coupled magnets prepared from core/shell Sm[Co(CN)6]·4H2O@GO particles: a novel chemical approach.
abstract: SmCo5 based magnets with smaller size and larger maximum energy product have been long desired in various fields such as renewable energy technology, electronic industry and aerospace science. However, conventional relatively rough synthetic strategies will lead to either diminished magnetic properties or irregular morphology, which hindered their wide applications. In this article, we present a facile chemical approach to prepare 200 nm single domain SmCo5@Co core/shell magnets with coercivity of 20.7 kOe and saturation magnetization of 82 emu/g. We found that the incorporation of GO sheets is responsible for the generation of the unique structure. The single domain SmCo5 core contributes to the large coercivity of the magnets and the exchange-coupled Co shell enhances the magnetization. This method can be further utilized in the synthesis other Sm-Co based exchange-coupled magnets.
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Beijing 100871, China.
authors.forename: Ce
authors.initials: C
authors.lastname: Yang
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Lihui
authors.initials: L
authors.lastname: Jia
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Shouguo
authors.initials: S
authors.lastname: Wang
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Gao
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Shi
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Beijing 100871, China.
authors.forename: Yanglong
authors.initials: Y
authors.lastname: Hou
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Song
authors.initials: S
authors.lastname: Gao