College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials (Ministry of Education), Beijing University of Technology, Beijing 100124, China
A variety of intermetallic compounds in the binary Sm–Co system were reviewed, and the contents were focused on the crystal structures, magnetic properties and the nanoscale effects. The representative nanocrystalline Sm–Co compounds were introduced in details, the diagrams for their lattice structures and the atomic sites and occupancies were provided. Moreover, the magnetic properties of the nanocrystalline Sm–Co compounds were compared with those of the conventional polycrystalline counterparts. It showed that the nanocrystalline Sm–Co compounds exhibit special phase stability and remarkably enhanced magnetic performance, which are promising candidates for the matrix phases to develop permanent magnets, particularly the advanced high-temperature magnetic materials.
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