The microchemistry and magnetism of Sm-Co permanent magnets were analyzed using first-principles calculations. It was found that when Sm-Co system was doped with Cu, Sm-Co phase was formed, where Zr and Ti were present in both phases facilitating the production of a microstructure fit to create coercivity. Impurities of Cu, Ti, and Zr were computed at each inequivalent position of the Co sites, along with the energies of the basis compounds. It was found that Cu, showing a high solubility in the 1:5 phase, resulted in the phase segregation and tuned the anisotropy of the grain boundary phase.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)