Loading patent…
AssigneesPostech Research and Business Development Foundation, Max Planck Postech/Korea Research Initiative
InventorsJi Hoon SHIM, Chang Hoon LEE, Jae Hoon PARK
Estimating the term…
In one or more aspects, a CeFe12-based compound is provided as a permanent magnet for replacing a conventional neodymium magnet Nd2Fe14B. In one or more aspects, the instability of the CeFe12-based compound has been controlled, improving the magnetic properties of CeFe12, through Ce f-orbital stabilization by supplying electrons to a CeFe12 system through the insertion of a non-metallic element and the insertion of an element having an atomic size greater than that of Fe, and improving coercivity by increasing the orbital angular momentum of the Ce f-orbit to increase magnetic anisotropy. The CeFe12-based compound with improved coercivity has been provided through the substitution of 4d- and 5d-transition metals having a spin-orbit interaction greater than that of Fe, and a non-metallic element is inserted into CeFe11M, in which dynamic instability has been resolved, in order to increase coercivity, and thus usefulness in actual synthesis and application has been demonstrated.
A permanent magnetic material, as a CeFe12A compound, in which inserted A forms a coordination bond between Ce-A-Ce.
A permanent magnetic material expressed as CeFe11M in which a transition metal M with an atomic size larger than Fe is substituted to eliminate the dynamic instability of CeFe12.
A permanent magnetic material as CeFe11MA compound, wherein M contains at least one of a 4d-transition metal or a 5d-transition metal, and A are atoms whose outermost electrons do not contain d-orbital electrons.
Dependencies are inferred from the claim text.